lyra | A Very Low-Bitrate Codec for Speech Compression

 by   google C++ Version: v1.3.2 License: Apache-2.0

kandi X-RAY | lyra Summary

kandi X-RAY | lyra Summary

lyra is a C++ library. lyra has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

The basic architecture of the Lyra codec is quite simple. Features are extracted from speech every 40ms and are then compressed for transmission at a bitrate of 3kbps. The features themselves are log mel spectrograms, a list of numbers representing the speech energy in different frequency bands, which have traditionally been used for their perceptual relevance because they are modeled after human auditory response. On the other end, a generative model uses those features to recreate the speech signal. Lyra harnesses the power of new natural-sounding generative models to maintain the low bitrate of parametric codecs while achieving high quality, on par with state-of-the-art waveform codecs used in most streaming and communication platforms today. Computational complexity is reduced by using a cheaper recurrent generative model, a WaveRNN variation, that works at a lower rate, but generates in parallel multiple signals in different frequency ranges that it later combines into a single output signal at the desired sample rate. This trick, plus 64-bit ARM optimizations, enables Lyra to not only run on cloud servers, but also on-device on mid-range phones, such as Pixel phones, in real time (with a processing latency of 100ms). This generative model is then trained on thousands of hours of speech data with speakers in over 70 languages and optimized to accurately recreate the input audio.
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            kandi-support Support

              lyra has a medium active ecosystem.
              It has 3630 star(s) with 332 fork(s). There are 113 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 63 open issues and 45 have been closed. On average issues are closed in 108 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of lyra is v1.3.2

            kandi-Quality Quality

              lyra has no bugs reported.

            kandi-Security Security

              lyra has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              lyra is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              lyra releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.

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            lyra Key Features

            No Key Features are available at this moment for lyra.

            lyra Examples and Code Snippets

            No Code Snippets are available at this moment for lyra.

            Community Discussions

            QUESTION

            sed: no input files
            Asked 2021-Jan-25 at 23:11

            I have a script where I read in columns of data from an "input file", then use those to change some variables in another file.

            Here is my script, titled FA_grid_changer.sh

            ...

            ANSWER

            Answered 2021-Jan-25 at 23:11

            QUESTION

            Logstash pipeline template for Spring Boot deployed to Cloud Foundry
            Asked 2019-Oct-06 at 13:44

            I am looking for a very basic pipeline template that allows me to correctly index all available fields of a log-message.

            I use Spring Boot (2.1.x) out of the box, deploy it to Cloud Foundry and log via stdout/logdrain to Logstash and eventually to Elasticsearch.

            I already searched the internet and found only one template for Cloud Foundry apps:

            ...

            ANSWER

            Answered 2019-Oct-06 at 13:44

            Ok, so I managed to do this with the following steps and thanks to this nice article:

            Spring Boot app Add this dependency

            Source https://stackoverflow.com/questions/58214196

            QUESTION

            How to delete the space between parent and the cell?
            Asked 2019-Jun-20 at 08:34

            I have a border between parent and my cell. How to delete it ?

            I search but I don't find where is the problem in my code.

            Main class :

            ...

            ANSWER

            Answered 2019-Jun-20 at 08:29
            android:layout_margin="15dp"
            

            Source https://stackoverflow.com/questions/56681952

            QUESTION

            Element not interactable/not Clickable at point(x,y)
            Asked 2019-May-27 at 11:17

            Im trying to scrape articles from multiple pages from https://edm.com/news using Selenium with chromedriver and ran into multiple errors while trying to hit the "See More" button. Any ideas of what can i try?

            I have tried working with ActionChains.move_to_element(..).click.perform() also tried multiple time.sleep calls or WebDriverWait.until... nothing seems to do the trick.

            ...

            ANSWER

            Answered 2019-May-27 at 10:48

            QUESTION

            The HTTP redirect request failed in UWP C# project
            Asked 2019-May-24 at 08:48

            I'm getting this error "The HTTP redirect request failed" when I'm trying to get text (whole string) of this url (for example) : "https://apic-desktop.musixmatch.com/ws/1.1/macro.subtitles.get?format=json&q_track=Mi%20Mi%20Mi%20%28Radio%20Edit%29&q_artist=SEREBRO&user_language=en&subtitle_format=mxm&app_id=web-desktop-app-v1.0&usertoken=SECRET TOKEN" but it's worked in chrome and I must get that json file https://pastebin.com/GJdLK3BA (I uploaded it to Pastebin)

            Platform:UWP x64 System:Windows 10 pro April Update

            ...

            ANSWER

            Answered 2019-May-24 at 07:28

            The Windows.Web.Http.Headers namespace supports creation of HTTP headers and cookies, which are then associated as properties with HttpRequestMessage and HttpResponseMessage objects. Please add header = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)"; before send get request like the following. For more detail please refer this document.

            Source https://stackoverflow.com/questions/56283239

            QUESTION

            How to configure Kibana for Swisscom elasticsearch public cloud (CloudFoundry)
            Asked 2019-May-13 at 11:24

            Note: This question is specific to the Elasticsearch service provided by Swisscom

            Question: (a.k.a: tl;dr)

            What configuration is required to get the official Kibana docker container to connect to a Swisscom Elasticsearch Service?

            Background:

            Up until about a year ago the Swisscom public cloud offered a full ELK stack (Elasticsearch, Logstash, Kibana) in a single service offering. When this service was discontinued, Swisscom replaced it by just offering the Elasticsearch service and asked clients to setup their own Kibana and Logstash solutions via provided CloudFoundry build_packs (Kibana, Logstash). The migration recommendation was discussed here: https://ict.swisscom.ch/2018/04/building-the-elk-stack-on-our-new-elasticsearch/

            More recently, the underlying OS (called "stack") that runs the applications on Swisscom's CloudFoundry-based PaaS offering, has been upgraded. The aforementioned build_packs are now outdated and have been declared as deprecated by Swisscom. The suggestion now is to move to a generic Docker container provided by Elastic as discussed here: https://github.com/swisscom/kibana-buildpack/issues/3

            What I tried:

            CloudFoundry generally works well with Docker containers and the whole thing should be as straight forward as providing some valid configuration to the docker container. My current manifest.yml for Kibana looks something like this, but the Kibana application ultimately fails to connect:

            ...

            ANSWER

            Answered 2019-May-13 at 11:24

            Could it be that you confused username and password? When I check my service-key password comes before username, which might have lead to a copy-paste error on your side:

            Source https://stackoverflow.com/questions/56071932

            QUESTION

            Generating 3D surface plots with Vega?
            Asked 2019-May-11 at 21:38

            A current project requires us to use Vega Visualization Grammar wherever possible and otherwise fall back to D3.js. 3D-surface plots are not part of the Vega's gallery of examples, however Vega Documentation makes me optimistic that we could create our own graph representations. Could somebody advise me how to do generate 3D surface plots with Vega? Any tutorial you suggest? Or maybe even a brief recipe assuming that I have a data set of say a few 100 (x,y,z) tuples?

            Edit: The goal is quasi-static graphics with linear-interpolation between the points, in R we would probably do it like with a wireframe.

            Obviously, I extensively used search engines, but see many results on astronomic research on α Lyrae.

            ...

            ANSWER

            Answered 2018-Sep-19 at 16:34

            3D surface plots are not supported by Vega. You might try another library, like threejs.

            Source https://stackoverflow.com/questions/52406318

            QUESTION

            Configuring audio codec on Espressif ESP32-LYRATD-MSC Development Board
            Asked 2019-Mar-10 at 19:39

            When I compile and flash an ESP32-LYRATD-MSC with the official audio recording examples, I get an es_write_reg error after configuring the ES8388 codec driver.

            What could have changed from the LYRA or WROVER kits to the LYRATD-MSC that could cause the error?

            ...

            ANSWER

            Answered 2019-Mar-10 at 19:39

            This is a known issue with the samples. The ESP32-LYRATD-MSC ships with the ZL38063 DSP chip, but as you can see from sample, it expects to configure the ESP8388:

            Source https://stackoverflow.com/questions/55012774

            QUESTION

            JavaScript If Else errors
            Asked 2019-Jan-29 at 18:10

            So I have this little problem with my if else structure. When I put in a correct star for example "Vega", the costellation shows me that it is false ("Error") while it needs to show me "Lyra".

            My code is below:

            ...

            ANSWER

            Answered 2019-Jan-29 at 18:04

            The problem is, when the for loop is running, the test.inputConstellations.value will be overridden, even if previously the program found a match. The solution is the break:

            Source https://stackoverflow.com/questions/53565423

            QUESTION

            How to keep columns from wrapping in HTML?
            Asked 2018-Oct-06 at 11:37

            I am trying to do a layout of cells similar to the output in this picture:

            But I need to do a lot of rows and I want the columns to be a specific size and NOT WRAP to another line if it goes over the size of the screen. For instance, say I have 10 columns, with each column being 200 pixels. I want a horizontal scroll if there are too many columns to fit on screen, rather than wrapping the other columns. My code is something like (I got it off the W3Schools.com website when my first attempt using a table did not work):

            ...

            ANSWER

            Answered 2018-Oct-06 at 10:31

            You could just set the body width to how wide you want it to be.

            Source https://stackoverflow.com/questions/52677711

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install lyra

            Lyra is built using Google's build system, Bazel. Install it following these instructions. Bazel verson 4.0.0 is required, and some Linux distributions may make an older version available in their application repositories, so make sure you are using the required version or newer. The latest version can be downloaded via Github. Lyra can be built from linux using bazel for an arm android target, or a linux target. The android target is optimized for realtime performance. The linux target is typically used for development and debugging.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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