AAC | ADPCM | Convolution | DAFx | FFT | IIR | Mixer | MP3 | MPEG | MPEG-4

Hello All,
    I need a favor. Can somebody tell me about the
companies who are having MPEG-2/4 AAC decoder and
among all of them who is having the best decoder?
If somebody has already worked on AAC, may he/she
share his/her experience about its performance,
complexity, memory requirment, cycle count, no of
channels supported by it for different profiles and
some other related stuff which I may be forgetting to
ask in this mail? From where can we get the reference
test vectors? How do we decide which one is best
decoder among all existing decoders? 
Can somebody share some good documents, links related
to MPEG-2/4 AAC techonlogy, even he/she can suggest
some good books on audio also, which can explain
basics of audio. 

Waiting for reply.

Regards,
Ajit
	

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Refer to the book: 

Introduction to Digital Audio Coding and Standards by 
Marina Bosi 
Stanford University, CA, USA 
Richard E. Goldberg 
The Brattle Group, Cambridge, MA, USA
It covers the foll. topics
	 Preface. I: Audio Coding Methods. 2. Quantization. 3. Representation of
Audio Signals. 4. Time to Frequency Mapping Part I: The PQMF. 5. Time to
Frequency Mapping Part II: The MDCT. 6. Introduction to Psychoacoustics. 7.
Psychoacoustic Models for Audio Coding. 8. Bit Allocation Strategies. 9.
Building a Perceptual Audio Decoder. 10. Quality Measurement of Perceptual
Audio Codecs. II: Audio Coding Standards. 11. MPEG-1 Audio. 12. MPEG-2 Audio
 13. MPEG-2 AAC. 14.Dolby AC-3. 15. MPEG-4 Audio. Index.
	Regards
Hitesh Thakker
	-------Original Message-------
 
From: ajit gupta
Date: Thursday, October 09, 2003 17:04:33
To: audiodsp@audi...
Subject: [audiodsp] MPEG-2/4 AAC decoder!
 
Hello All,
I need a favor. Can somebody tell me about the
companies who are having MPEG-2/4 AAC decoder and
among all of them who is having the best decoder?
If somebody has already worked on AAC, may he/she
share his/her experience about its performance,
complexity, memory requirment, cycle count, no of
channels supported by it for different profiles and
some other related stuff which I may be forgetting to
ask in this mail? From where can we get the reference
test vectors? How do we decide which one is best
decoder among all existing decoders? 
Can somebody share some good documents, links related
to MPEG-2/4 AAC techonlogy, even he/she can suggest
some good books on audio also, which can explain
basics of audio. 

Waiting for reply.

Regards,
Ajit
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