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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).
Waterfall windowing problems [2 Articles]
elvi...@hotmail.com - Oct 7 2008
Dears,
I am writing a program to make the waterfall plot, but have some doubt. Can you help?
1. I am using square window, is it correct?
2. Shall I keep the window size or... 
FIR filter on C6713
sven...@ymail.com - Oct 6 2008
Hi I am implementing a FIR filter on a TI DSK6713 for real-time audio processing. My code i written in C and based on dsk_app.c which comes with Code Composer. This code uses 4 buf... FFT output interpretation (FFTW v. Ooura) [15 Articles]
rela...@hotmail.co.uk - Oct 6 2008
I'm new(ish) to FFT and to broaden my knowledge/experience I've been comparing FFTW and the Ooura FFT library. I'm getting a result with the latter that I don't quite understand, h... Considerations about low pass FIR filter order
ÓÀÒ» Îâ - Oct 6 2008
hi,
I remember there is a suggestion to use even order low pass FIR filters instead of odd ones. But I'm not sure and can't remember where I got this information. The only reas... Basic Algorithm/formula to convert mic db output to db SPL [3 Articles]
jsnuff1 - Sep 30 2008
I have a mic that outputs its level in decibels (the range this mic outputs seems to be
between around -55db to 0db) and would like to find an algorithm that converts this value ... Is there such a thing as a simple DSP?
George Bean - Sep 25 2008
I have an application to decode an FSK signal on a VHF carrier. In the past
I would have used an EXAR XR2211A FSK demodulator chip feeding a
microcontroller but I assume with the... Spectrum of target's varying speed
sauw...@gmail.com - Sep 23 2008
Hi all,
This is more of a theoretical question, since I have much to learn about acoustics. How does a spectrum behave when a target (ex. car, plane) is evaluated at different ... Octave band-fft
sumandari - - Sep 14 2008
Hi, im newbie
sorry for my bad english
how to get octave band spectrum from fft spectrum without using
filter. Can i just average the freq in each bandwidth? Thankyou
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Re... Mixing down from multiple input sources [5 Articles]
"d.abc51" - Sep 13 2008
Hi all, I'm trying to code a program that can mix together multiple
PCM wav files into a single output. It is essentially a sequencer, and
works fine at points in the sequence wh... codecs and file format [6 Articles]
kaus...@yahoo.com - Sep 13 2008
Hello everybody,
-I often get confused between an audio codec and an audio file format. Doesnt a .mp3 extension necessarily mean that the file has been encoded using 'mp3' encodin...