[Mp4-tech] [AUDIO] Conformance test procedure for MPEG AAC Encoder

[Umang Garg]

Hello Dattaguru,
There are primarily 2 types of tests required for MPEG-4 AAC-LC decoder:
1. RMS/LSB measurement.
2. PNS Conformance
RMS/LSB measurement consists of two sub-tests.
(1.a) Calculation of the difference signal.
(1.b) Calculation of RMS value based on (1.a).
PNS conformance criterion is also subdivided into 2 parts:
(2.a) Spectral PNS Conformance.
(2.b) Temporal PNS Conformance.
All the above tests require that your output values lie below certain 
threshold or between certain range.
An exhaustive analysis of the tests along with the test criterions is 
provided in the document
ISO/IEC 14496-4, Second Edition.  This document is available from ISO.
Regards,
Umang Garg
NeoMagic Corporation, based in Santa Clara, California, enables new 
generations of handheld systems with its Applications Processors that 
are designed to offer the lowest power, smallest form-factor and best 
multimedia features and performance. The company is a pioneer in the 
integration of complex logic, memory and analog circuits into 
single-chip solutions. Information on the company may be found on the 
World Wide Web at www.neomagic.com.
Dattaguru B.N. wrote:
>Dear Experts,
>
>I am working on MPEG AAC LC Encoder.  
>
>Can anyone please let me know the procedure for the
>Conformance test.
>
>Thanks in advance for support,
>
>Thanks and regards,
>Datta
>
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