Ground loop filter noise isolator, eliminating the hiss, buzz and interference caused by ground loops which happens when the audio source and the speaker use the same power source in some car speakers ...

This audio noise filter circuit is a bandpass filter for audio frequency band. It filters unwanted signals that are lower or higher than the audio frequencies. It has 2 filters: a low pass filter and ...

Geneva—STMicroelectronics has developed a miniature filter that will help handset designers improve noise reduction in phones with MP3 capability. The EMIF02-SPK02F2 occupies 0.89 x 1.26mm of valuable ...