rucc bc6842a950 [mod_dptools:playback] fix audio speed change to preserve pitch
When  a  file  is  being played  with  the  playback
application  and  the  speed  is  changed  with  eg.
uuid_fileman  speed:+1  the audio  pitch  increases.
This commit tries to preserve the pitch even when the
speed is changed.

How?
+ Use longer sample chunks (where original freq is preserved)
+ Search for the best cut position using cross-correlation
+ Crossfade adjacent chunks to each other

This updated co-authored commit from the original attempts
to optimize memory usage by allocating memory on the heap
for samples of the previous frame, but using stack memory
for the modified data that is flushed to the buffer.

Co-authored-by: hari <lharangozo@feastfox.com>
Co-authored-by: Joseph Nadiv <ynadiv@corpit.xyz>
2025-01-09 10:44:08 -05:00
2015-05-28 12:47:19 -05:00
2010-04-01 21:00:45 -04:00
2015-12-15 17:02:49 +00:00
2014-12-26 17:22:20 +00:00
2014-08-01 14:47:38 -05:00
2013-04-04 20:52:47 -05:00
2013-12-23 22:43:06 +05:00

FreeSWITCH

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device. Combined with our hosted cloud platform, SignalWire, FreeSWITCH can interconnect with the outside world and scale to any size.

Visit https://signalwire.com or https://github.com/signalwire for more info.

Getting Started

FreeSWITCH is available on Github in source code format. You can checkout the development branch and build for many popular platforms including Linux, Windows, MacOSX and BSD. There is an issue tracker and pull request system available as part of the repo online.

See https://freeswitch.com/#getting-started for more detailed instructions.

Additional Help

If you need assistance or have an interest in using a commercially supported build, you can contact coreteam@freeswitch.com to learn about professional services to support your project.

Voice-over-IP services - SIP / SMS - App Integrations

SignalWire is the primary sponsor of the FreeSWITCH project and was founded by the original developers of FreeSWITCH. SignalWire provides scalable services to enhance and scale your project such as SMS, SIP, Serverless Application hosting as well as programmable telecom. mod_signalwire which is distributed in this code base allows you to instantly pair with SignalWire and extend your FreeSWITCH.

Documentation

The main index for documentation is available at:

Release notes:

Install from packages

Step by step tutorials to install FreeSWITCH from packages:

Build from source

Example Dockerfiles to build FreeSWITCH and dependencies from source:

Step by step tutorials to build FreeSWITCH with provided dependency packages:

Downloads

Contributions

GitHub pull requests are the recommended way to contribute to the FreeSWITCH source code:

Community

Slack is our chat system where the developers, the FreeSWITCH team, and the most active users are present. This is the place to get answers faster and chat with other users in real time. All you need to do is enter your email and verify it on the Slack signup page and you are ready to join in the discussion!

Slack Community:

Mailing list:

Thank you for using FreeSWITCH!

Description
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unl
Readme Multiple Licenses 196 MiB
Languages
C 65.2%
C++ 20.8%
JavaScript 4.8%
Assembly 2%
Makefile 1%
Other 5.4%