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Discussion Groups | Audio Signal Processing
Technical discussions related to Audio Signal Processing (digital effects, acoustics, noise reduction, musical signal processing, etc).
MDCT
bada...@yahoo.com - Jul 19 2007
I have a basic question about MDCT.
Why 2N point MDCT results only N point meaningfull frequency bins.
Please correct me if i am wrong.
A 8 point fft should produce 8 freque... 
TDAC Time division alias cancellation
bada...@yahoo.com - Jul 19 2007
Hi All,
can any body tell me how "TDAC" time division alias cancellation works in AC3 decoder.
I understand that at AC3 encoder end when any transient happens it can generate th... Re: Dither [2 Articles]
bada...@yahoo.com - Jul 18 2007
A good article to understand dithering---
http://en.wikipedia.org/wiki/Dithering
>
> Hello All,
>
> I have a strange but basic query . I am not able to understand
... ASF container format
mano...@yahoo.com - Jul 6 2007
Hi all,
I am working on ASF container format & not getting how the extra codec specific data is calculated for different codecs included in ASF file.
I have included below th... Noise is getting detected as DTMF Tones. [2 Articles]
madh...@signal-networks.com - Jul 5 2007
Dear All,
I've designed a digital DTMF detector in an FPGA, using a LPF, HPF and 8 Goertzel Filters.An AGC has also been designed which limits the upper thresholds to -3dB and... announce: Sound Synthesis Algorithms and an Open-Source Framework
bfraudio - Jul 5 2007
Hello
If you like to develop your own musical synthesizer, you can find
industry-grade algorithms and a free open-source framework for
realtime audio programming in C++ here... MPEG4 decoder testing [4 Articles]
Mohan Reddy - Jul 3 2007
Hi all
I am working on the MPEG4 AAC decoder . I have xxx.mp4 test vectors
but the decoder I have accepts only ADIF , ADTS formats.
So I am unable to do the testing, ca... Spetral Subtraction in Wavelet Domain [2 Articles]
khal...@yahoo.co.in - Jun 27 2007
Hi all,
Has anyone here done Spectral Subtraction in Wavelet Domain? How is this different from the one in FFT domain?
I have estimated the noise frame from the silence periods i... Adaptive Noice Cancellation - Two Microphone Recordings
Khalandar Pasha N - Jun 26 2007
Hi all,
Iam working on Adaptive noise cancellation using LMS filter in Wavelet Domain. i have completed all the coding required for the project. Iam using a Two microphone system,... Voice presence or absence detection [2 Articles]
Peter Gien - Jun 26 2007
I have an application that samples about 30 seconds of audio, 16 bit,
22050 samples per second. I would like to determine if there is a
human voice signal present or not. With ...