AK7750

[ASAHI KASEI] [AK7750] AK7750 Audio DSP with Built-in Hands-Free Phone Features General Description The AK7750 is a highly integrated Audio Digital Signal Processor with a stereo audio codec in one chip. The AK7750 combines an on-chip DSP and an ARM7 processor that can be used to create Echo Cancellation (EC) and Noise Cancellation (NC) functions. These functions make the AK7750 a perfect choice for hands-free phones that require suppressing acoustic echo and noise. Voice quality and noise suppression levels can be precisely adjusted by externally setting various parameters. Additionally, no external Flash, ROM, or RAM is required as memories for Echo and Noise Cancellation are integrated onchip. By using an external microprocessor to change algorithms, the AK7750 can be used in other audio applications including sound field enhancements like surround, volume control, parametric equalizer and speaker compensation. These functions are simplified by the AK7750 through the integration o...