AAC/SBR encoder improvements
* AAC-Encoder
- AAC-ELD core encoder audio quality tuning. Update tuning tables, configure
bitreservoir size and adapt afterburner iteration value.
Modified file(s):
libAACenc/src/aacenc.h
libAACenc/src/aacenc_lib.cpp
libAACenc/src/adj_thr.cpp
libAACenc/src/adj_thr.h
libAACenc/src/adj_thr_data.h
libAACenc/src/bandwidth.cpp
libAACenc/src/pnsparam.cpp
libAACenc/src/qc_main.cpp
- Introduze dead zone quantizer for ELD to improve audio quality at certain
configurations.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
libAACenc/src/adj_thr.cpp
libAACenc/src/adj_thr.h
libAACenc/src/qc_data.h
libAACenc/src/qc_main.cpp
libAACenc/src/quantize.cpp
libAACenc/src/quantize.h
libAACenc/src/sf_estim.cpp
libAACenc/src/sf_estim.h
- Revise TNS module to improve ELD audio quality.
- Use new window function and separate prediction gain according TNS filters.
- Add missing memory initilization to TNS configuration.
Modified file(s):
libAACenc/src/aacenc_lib.cpp
libAACenc/src/aacenc_tns.cpp
libAACenc/src/aacenc_tns.h
libAACenc/src/psy_main.cpp
libAACenc/src/tns_func.h
* SBR-Encoder
- Revise frequency resolution calculation and handle differently depending
on number of envelopes and split frames decision.
- Add and adjust ELD SBR tuning tables.
Modified file(s):
libSBRenc/include/sbr_encoder.h
libSBRenc/src/bit_sbr.h
libSBRenc/src/env_est.cpp
libSBRenc/src/fram_gen.cpp
libSBRenc/src/fram_gen.h
libSBRenc/src/mh_det.cpp
libSBRenc/src/sbr_def.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/sbr_rom.cpp
libSBRenc/src/tran_det.cpp
- Replace ELD transient detector with fast implementation.
Modified file(s):
libSBRenc/src/env_est.cpp
libSBRenc/src/env_est.h
libSBRenc/src/fram_gen.cpp
libSBRenc/src/sbr_def.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/tran_det.cpp
libSBRenc/src/tran_det.h
* FDK-Library
- Introduce generic compare function in tools library.
Modified file(s):
libFDK/include/fixpoint_math.h
libFDK/src/FDK_core.cpp
* SBR-Encoder
- Revise ELD frame splitter to improve bit distribution.
Modified file(s):
libSBRenc/include/sbr_encoder.h
libSBRenc/src/bit_sbr.h
libSBRenc/src/env_est.cpp
libSBRenc/src/fram_gen.cpp
libSBRenc/src/fram_gen.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/tran_det.cpp
libSBRenc/src/tran_det.h
- Configure amplitude resolution according the tonality of the audio signal.
Modified file(s):
libSBRenc/include/sbr_encoder.h
libSBRenc/src/bit_sbr.h
libSBRenc/src/env_est.cpp
libSBRenc/src/nf_est.cpp
libSBRenc/src/nf_est.h
libSBRenc/src/sbr_def.h
libSBRenc/src/sbr_encoder.cpp
libSBRenc/src/ton_corr.cpp
libSBRenc/src/ton_corr.h
libSBRenc/src/tran_det.cpp
libSBRenc/src/tran_det.h
Change-Id: Ie0672b989a06ee63b50240616b8d1d4b790b6cb2
35 files changed
