Genesi Home Home Projects Forums
Login
Username:

Password:

Remember Me
 
[Register an Account]

Developer Programs
i.MX515
Power2People MPC8610

Efika 5200B

Search Projects

Google

Sponsored By



Efika 5200B Project
Reggae on Efika

in category Multimedia
proposed by Grzegorz Kraszewski on 21st February 2006 (accepted on 20th March 2006)

Blog Entry

  audio.output progress, audio resampling
posted by Grzegorz Kraszewski on 12th May 2008

I've done some more work on new audio.output class version. It has a complete subthread framework including command passing. The thread opens AHI, in case of failure, object fails gracefully as it should, with error reported.

I've also started work on a variable rate audio resampler. It uses bandlimited resampling concept described by J. O. Smith. I've started from designing three resample filters, for three levels of quality. The first, low quality filter is ready. It has 257 coefficents in total and spans over 32 input samples (if no scaling is used). The filter ensures both aliasing distortions and filter interpolation distortions are kept below -40 dB.

PowerDeveloper.org: Copyright © 2004-2010, Genesi USA, Inc. The Power Architecture and Power.org wordmarks and the Power and Power.org logos and related marks are trademarks and service marks licensed by Power.org. All other names and trademarks used are property of their respective owners. Privacy Policy