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CD2399 - Surround Reverb sound processor
TDA7442 - TONE CONTROL AND SURROUND DIGITALLY CONTROLLED AUDIO PROCESSOR
UPC1892 - MATRIX SURROUND SOUND PROCESSOR WITH SOUND PROCESSOR
NJM2177 - DOLBY PRO LOGIC SURROUND DECODER
NJU26108 - SRS CSII 5.1 AND TruSurround XT Decoder
ETK3699 - Digital surround sound reverberation processor
CXD2724AQ-1 - Single-Chip Dolby Pro Logic Surround Decoder
ADV-700 - DVD Surround Receiver
UPC1853 - MATRIX SURROUND IC WITH I2C BUS
UPC1891A - MATRIX SURROUND-SOUND PROCESSOR
TDA7442D - TONE CONTROL AND SURROUND DIGITALLY CONTROLLED AUDIO PROCESSOR
NJM2188 - Passive Matrix TruSurround 3D Audio Processor
CS42448 - Surround-sound CODEC
CS4228 - 24-Bit 96kHz Surround Sound Codec
CXA1673M - 2 CHANNEL SURROUND
CXD2724AQ-3 - Single-Chip Dolby Pro Logic Surround Decoder
CXD2728Q - Single-Chip Dolby Pro Logic Surround Decoder
UPC1857A - SOUND CONTROL IC WITH SURROUND AND I2C BUS
TDA7346 - DIGITAL CONTROLLED SURROUND SOUND MATRIX
CD3699 - Echo / surround sound processor IC