TDA7719 3-Band Car Audio Processors STMicroelectronics TDA7719 3-band car audio processors are high-performance signal processors designed for car audio applications. The STMicroelectronics TDA7719 includes an audio processor with fully integrated audio filters and new Soft Step architecture. The digital control of STMicroelectronics TDA7719 3-band car audio processors allows programming in a wide range of filter characteristics. The TDA7719 achieves low distortion and low noise.