sound | Dump non-compressed WAV file to a CSV file | CSV Processing library
kandi X-RAY | sound Summary
kandi X-RAY | sound Summary
This work started off as a fork of Dr. Taylor’s work (dead link). On master branch the project has diverged a lot. We provide a C++ class to read WAV file. It’s content are stored in an array which we finally write to a csv file. You can plot this csv file using any application of your choise. We only support non-compressed WAV file. On other branches, this project has diverged a lot.
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QUESTION
I was programming a game using Python and a sound effect needed to be played, so I used the playsound module:
...ANSWER
Answered 2021-Sep-05 at 07:20I don't think PlaySound supports .wav files. Try converting Typing.wav into an mp3 file. Then change
QUESTION
I have this code and I am getting this error that I have been trying to solve from 3 to 4 days and I didn't find a solution hope anyone can help me to get a solution to solve this Binding error I am facing.
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_navigation/src/extension_navigation.dart:357:24: Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
- 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance!.addPostFrameCallback((_) { ^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_navigation/src/extension_navigation.dart:468:24: Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
- 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance!.addPostFrameCallback((_) { ^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_navigation/src/snackbar/snackbar.dart:452:22: Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
- 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance!.addPostFrameCallback( ^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_state_manager/src/rx_flutter/rx_disposable.dart:20:22: Warning: Operand of null-aware operation '?.' has type 'SchedulerBinding' which excludes null.
- 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance?.addPostFrameCallback((_) => onReady()); ^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_state_manager/src/rx_flutter/rx_notifier.dart:130:22: Warning: Operand of null-aware operation '?.' has type 'SchedulerBinding' which excludes null.
- 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance?.addPostFrameCallback((_) => onReady()); ^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_state_manager/src/simple/get_controllers.dart:90:20: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
- 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance!.addObserver(this); ^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_state_manager/src/simple/get_controllers.dart:96:20: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
- 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance!.removeObserver(this); ^ /C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/get-4.6.1/lib/get_navigation/src/router_report.dart:53:22: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
- 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance!.addPostFrameCallback((_) { ^ This app is linked to the debug service: ws://127.0.0.1:53736/oionbuT1rro=/ws Debug service listening on ws://127.0.0.1:53736/oionbuT1rro=/ws
Running with sound null safety Debug service listening on ws://127.0.0.1:53736/oionbuT1rro=/ws Error: Assertion failed: file:///C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_core_web-1.5.4/lib/src/firebase_core_web.dart:273:11 options != null "FirebaseOptions cannot be null when creating the default app." at Object.throw_ [as throw] (http://localhost:53548/dart_sdk.js:5066:11) at Object.assertFailed (http://localhost:53548/dart_sdk.js:4991:15) at firebase_core_web.FirebaseCoreWeb.new.initializeApp (http://localhost:53548/packages/firebase_core_web/firebase_core_web.dart.lib.js:252:42) at initializeApp.next () at http://localhost:53548/dart_sdk.js:40547:33 at _RootZone.runUnary (http://localhost:53548/dart_sdk.js:40417:59) at _FutureListener.thenAwait.handleValue (http://localhost:53548/dart_sdk.js:35361:29) at handleValueCallback (http://localhost:53548/dart_sdk.js:35907:49) at Function._propagateToListeners (http://localhost:53548/dart_sdk.js:35945:17) at _Future.new.[_completeWithValue] (http://localhost:53548/dart_sdk.js:35793:23) at async._AsyncCallbackEntry.new.callback (http://localhost:53548/dart_sdk.js:35814:35) at Object._microtaskLoop (http://localhost:53548/dart_sdk.js:40684:13) at _startMicrotaskLoop (http://localhost:53548/dart_sdk.js:40690:13) at http://localhost:53548/dart_sdk.js:36167:9
...ANSWER
Answered 2022-Feb-22 at 11:50This happend to me when I updated Dart SDK to Beta channel, If you also updated your Dart sdk try to downgrade your Dart sdk from Beta channe; to the Stable Channel Dart version.
The commend to downgrade your dart is
QUESTION
I would like to be able to robustly stop a video when the video arrives on some specified frames in order to do oral presentations based on videos made with Blender, Manim...
I'm aware of this question, but the problem is that the video does not stops exactly at the good frame. Sometimes it continues forward for one frame and when I force it to come back to the initial frame we see the video going backward, which is weird. Even worse, if the next frame is completely different (different background...) this will be very visible.
To illustrate my issues, I created a demo project here (just click "next" and see that when the video stops, sometimes it goes backward). The full code is here.
The important part of the code I'm using is:
...ANSWER
Answered 2022-Jan-21 at 19:18The video has frame rate of 25fps, and not 24fps:
After putting the correct value it works ok: demo
The VideoFrame api heavily relies on FPS provided by you. You can find FPS of your videos offline and send as metadata along with stop frames from server.
The site videoplayer.handmadeproductions.de uses window.requestAnimationFrame() to get the callback.
There is a new better alternative to requestAnimationFrame. The requestVideoFrameCallback(), allows us to do per-video-frame operations on video.
The same functionality, you domed in OP, can be achieved like this:
QUESTION
How to memory-map a PCI Base Address Register (BAR) from a PCIDriverKit driver (DEXT) to a userspace application?
Memory-mapping from a driver extension to an application can be accomplished by implementing the IOUserClient::CopyClientMemoryForType in the user client subclass (on the driver side) and then calling IOConnectMapMemory64 (from the user-space application side). This has been very nicely and thoroughly explained in this related answer.
The only missing bit is getting an IOMemoryDescriptor corresponding to the desired PCI BAR in order to return it from the CopyClientMemoryForType implementation.
Asked another way, given the following simplified code, what would be the implementation of imaginaryFunctionWhichReturnsTheBARBuffer?
ANSWER
Answered 2022-Jan-16 at 17:01Turns out IOPCIDevice::_CopyDeviceMemoryWithIndex was indeed the function needed to implement this (but the fact that it's private is still an inconvenient).
Bellow is some sample code showing how this could be implemented (the code uses MyDriver for the driver class name and MyDriverUserClient for the user client).
Relevant sections from MyDriver.cpp implementation:
QUESTION
I am trying to get to grips with the specifics of the (C++20) standards requirements for container classes with a view to writing some container classes that are compatible with the standard library. To begin looking into this matter I have looked up the references for named requirements, specifically around container requirements, and have only found one general container requirement called Container given by the standard. Reading this requirement has given my two queries that I am unsure about and would like some clarification on:
The requirement for the expression
a == bfor two container typeChas as precondition on the element typeTthat it is equality comparable. However, noted later on the same page under the header 'other requirements' is the explicitly requirement thatTbe always equality comparable. Thus, on my reading the precondition for the aforementioned requirement is redundant and need not be given. Am I correct in this thinking, or is there something else at play here that I should take into account?I was surprised to see explicit requirements on
Tat all: notably the equality comparable requirement above and the named requirement destructible. Does this mean it is undefined behaviour to ever construct standard containers of types failing these requirements, or only to perform certain standard library function calls on them?
Apologies if these two questions sound asinine, I am currently trying to transition my C++ knowledge from a place of having a basic understanding of how to use features to a robust understanding so that I may write good generic code. Whilst I am trying to use (a draft of) the standard to look up behaviour where possible, its verbiage is oft too verbose for me to completely understand what is actually being said.
In an attempt to seek the answer I cooked up a a quick test .cpp file to try an compile, given below. All uncommented code compiles with MSVC compiler set to C++20. All commented code will not compile, and visa versa all uncommented code will. It seems that what one naively thinks should work does In particular:
- We cannot construct any object without a destructor, though the objects type is valid and can be used for other things (for example as a template parameter!)
- We cannot create an object of
vector, whereThas no destructor, even if we don't attempt to create any objectsT. Presumably because creating the destructor forvectortries to access a destructor forT. - We can create an object of type
vector,TwhereThas no operator==, so long as we do not try to use operator==, which would requireTto have operator==.
However, just because my compiler lets me make an object of vector where T is not equality-comparable does not mean I have achieved standards compliant behaviour/ all of our behaviour is not undefined - which is what I want I concerned about, especially as at least some of the usual requirements on the container object have been violated.
Code:
...ANSWER
Answered 2021-Dec-30 at 04:32If the members of a container are not destructible, then the container could never do anything except add new elements (or replace existing elements). erase, resize and destruction all involve destroying elements. If you had a type T that was not destructible, and attempted to instantiate a vector (say), I would expect that it would fail to compile.
As for the duplicate requirements, I suspect that's just something that snuck in when the CppReference folks wrote that page. The container requirements in the standard mention (in the entry for a == b) that the elements must be equality comparable.
QUESTION
I am looking for a way to detect if the device I am using can support Dolby Atmos sounds.
After searching around I found this call.
https://github.com/w3c/media-capabilities/blob/main/explainer.md#spatial-audio
...ANSWER
Answered 2021-Dec-24 at 06:57Detecting the codec doesn't necessarily detect whether the system can support Dolby Atmos
Correct.
What reliable way is there to detect if your system will truly support Dolby Atmos whether its with a receiver or a Dolby Atmos compliant sound bar.
Unfortunately, this undetectable from the browser.
The browser itself and even the OS doesn't always know what is downstream. Sorry for the bad news!
QUESTION
In this answer to the question -
What is non-blocking or asynchronous I/O in Node.js?
the description sounds no different from the event loop in vanilla js. Is there a difference between the two? If not, is the Event loop simply re-branded as "Asynchronous non-blocking I/O" to sell Node.js over other options more easily?
...ANSWER
Answered 2021-Dec-10 at 06:41There are 2 different Event Loops:
- Browser Event Loop
- NodeJS Event Loop
The Event Loop is a process that runs continually, executing any task queued. It has multiple task sources which guarantees execution order within that source, but the Browser gets to pick which source to take a task from on each turn of the loop. This allows Browser to give preference to performance sensitive tasks such as user-input.
There are a few different steps that Browser Event Loop checks continuously:
Task Queue - There can be multiple task queues. Browser can execute queues in any order they like. Tasks in the same queue must be executed in the order they arrived, first in - first out. Tasks execute in order, and the Browser may render between tasks. Task from the same source must go in the same queue. The important thing is that task is going to run from start to finish. After each task, Event Loop will go to Microtask Queue and do all tasks from there.
Microtasks Queue - The microtask queue is processed at the end of each task. Any additional microtasks queued during during microtasks are added to the end of the queue and are also processed.
Animation Callback Queue - The animation callback queue is processed before pixels repaint. All animation tasks from the queue will be processed, but any additional animation tasks queued during animation tasks will be scheduled for the next frame.
Rendering Pipeline - In this step, rendering will happen. The Browser gets to decide when to do this and it tried to be as efficient as possible. The rendering steps only happen if there is something actually worth updating. The majority of screens update at a set frequency, in most cases 60 times a second (60Hz). So, if we would change page style 1000 times a second, rendering steps would not get processed 1000 times a second, but instead it would synchronize itself with the display and only render up to a frequency display is capable of.
Important thing to mention are Web APIs, that are effectively threads. So, for example setTimeout() is an API provided to us by Browser. When you call setTimeout() Web API would take over and process it, and it will return the result to the main thread as a new task in a task queue.
The best video I found that describes how Event Loops works is this one. It helped me a lot when I was investigating how Event Loop works. Another great videos are this one and this one. You should definitely check all of them.
NodeJS Event LoopNodeJS Event Loop allows NodeJS to perform non-blocking operations by offloading operation to the system kernel whenever possible. Most modern kernels are multi-threaded and they can perform multiple operations in the background. When one of these operations completes, the kernel tells NodeJS.
Library that provides the Event Loop to NodeJS is called Libuv. It will by default create something called Thread Pool with 4 threads to offload asynchronous work to. If you want, you can also change the number of threads in the Thread Pool.
NodeJS Event Loop goes through different phases:
timers - this phase executes callbacks scheduled by
setTimeout()andsetInterval().pending callbacks - executes I/O callbacks deferred to the next loop iteration.
idle, prepare - only used internally.
poll - retrieve new I/O events; execute I/O related callbacks (almost all with the exception of close callbacks, the ones scheduled by timers, and
setImmediate()) Node will block here when appropriate.check -
setImmediate()callbacks are invoked here.close callbacks - some close callbacks, e.g.
socket.on('close', ...).
Between each run of the event loop, Node.js checks if it is waiting for any asynchronous I/O or timers and shuts down cleanly if there are not any.
In Browser, we had Web APIs. In NodeJS, we have C++ APIs with the same rule.
I found this video to be useful if you want to check for more information.
QUESTION
We are working on a project which allows us to record some sounds from a microphone with a 5k Hz sample rate with some Low-Pass filter & HighPass filter.
What we are using
We are using AvaudioEngine for this purpose.
We are using AVAudioConverter for downgrading the sample rate.
We are using AVAudioUnitEQ for the LowPass & HighPass filter.
Code
...ANSWER
Answered 2021-Dec-17 at 10:50I think the main problem with this code was that the AVAudioConverter was being created before calling engine.prepare() which can and will change the mainMixerNode output format. Aside from that, there was a redundant connection of mainMixerNode to outputNode, along with a probably incorrect format - mainMixerNode is documented to be automatically created and connected to the output node "on demand". The tap also did not need a format.
QUESTION
We're trying to upgrade spring boot version to 2.6.0 and faced up with "Spring Boot [2.6.0] is not compatible with this Spring Cloud release train" (when running integration tests).
In additional
spring-cloud.version = 2020.0.4
We're using org.springframework.cloud (spring-cloud-context & spring-cloud-commons) 3.0.4
And have (also) this block in the pom:
...
ANSWER
Answered 2021-Nov-23 at 07:45It will be released on November 30 2021. See https://github.com/spring-cloud/spring-cloud-release/milestones?direction=asc&sort=due_date&state=open
QUESTION
I'm trying to implement a continuous deployment system to build my app and deploy to Google Play using codemagic. Doing a build works fine locally but fails remotely on codemagic.
Error summary:
...ANSWER
Answered 2021-Nov-09 at 10:54to fix this you need to upgrade Gradle version in android/gradle/wrapper/gradle-wrapper.properties to 6.7.1 or commit gradle wrapper to your repository if you don't have this file.
Additional to that you also might need to upgrade Android Gradle plugin in andriod/build.gradle
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