gammaenv | DSP S-curve envelope signal generator/low-pass filter C | Audio Utils library

 by   avaneev C++ Version: Current License: MIT

kandi X-RAY | gammaenv Summary

kandi X-RAY | gammaenv Summary

gammaenv is a C++ library typically used in Audio, Audio Utils applications. gammaenv has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

"gammaenv" produces smoothed-out S-curve envelope signal with the specified attack and release characteristics. The attack and release times can be further adjusted in real-time. Delay parameter is also specified as the percentage of the total time. The S-curve produced by this envelope algorithm closely resembles a sine-wave signal slightly augmented via the tanh() function. Such augmentation makes the shape slightly steeper and in the end allows the algorithm to follow it closer. The name "gammaenv" relates to this algorithm's version. The algorithm's topology is based on 5 sets of "leaky integrators" (the simplest form of 1st order low-pass filters). Each set (except the 5th) use 4 low-pass filters in series. Outputs of all sets are then simply summed/subtracted to produce the final result. The topology is numerically stable for any valid input signal, but may produce envelope overshoots depending on the input signal. Up to 25% of total attack (or release) time can be allocated (via Delay parameters) to the delay stage. The delay is implemented by the same topology: this has the benefit of not requiring additional memory buffering. For example, it is possible to get up to 250 ms delay on a 1-second envelope release stage without buffering. The processSymm() function provides the "perfect" implementation of the algorithm, but it is limited to the same attack and release times. A more universal process() function can work with any attack and release times, but it is about 2 times less efficient and the actual attack stage's envelope can range from the "designed" U to the undesired sharp V shape. Unfortunately, the author was unable to find an approach that could be similar to the processSymm() function while providing differing attack and release times (the best approach found so far lengthens the delay stage unpredictably). Compile and run the testtable.cpp to produce a tab-delimited table of curves at various delay values. Also use this source as an example of envelope generator setup and use procedure.
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              gammaenv has a low active ecosystem.
              It has 10 star(s) with 1 fork(s). There are 4 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 0 open issues and 1 have been closed. On average issues are closed in 6 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of gammaenv is current.

            kandi-Quality Quality

              gammaenv has no bugs reported.

            kandi-Security Security

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

            kandi-License License

              gammaenv is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              gammaenv releases are not available. You will need to build from source code and install.

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            gammaenv Key Features

            No Key Features are available at this moment for gammaenv.

            gammaenv Examples and Code Snippets

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            Community Discussions

            QUESTION

            Can I use a notation for an Inductive type to define that type in Coq?
            Asked 2017-Oct-02 at 05:21

            Suppose I've got something like this:

            ...

            ANSWER

            Answered 2017-Oct-02 at 05:21

            Expanding on ejgallego's comment, there is documentation for Reserved Notations and a where clause for inductives. Here is code that works:

            Source https://stackoverflow.com/questions/42237410

            QUESTION

            Syntax Error with `<` in Coq Notations
            Asked 2017-Feb-15 at 08:17

            The following code:

            ...

            ANSWER

            Answered 2017-Feb-15 at 08:17

            Coq uses an LL1 parser to process notations. It also can output the grammar. So, let's check what we are getting with the following

            Source https://stackoverflow.com/questions/42239138

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

            Vulnerabilities

            No vulnerabilities reported

            Install gammaenv

            You can download it from GitHub.

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            https://github.com/avaneev/gammaenv.git

          • CLI

            gh repo clone avaneev/gammaenv

          • sshUrl

            git@github.com:avaneev/gammaenv.git

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