Patent review

This was a group Experiment - finding out relevant papers and patents on DSPP applications. We, as a group of 5 - Abhijit Haridas, Shreyas Padte, Vipan Koul, Sakshi Joshi and myself had to study on research papers and patents which implemented compression of the audio signal. We chose to study "Audio Compression" as an application.

Patent Review

Patent No: US 20030220801 A1                                                                                                             Publication date: Nov27,2003                                                                                                                   Inventor: Thomas Spurrier           

Summary:

Compression is a signal processing operation that reduces the noise or amplifies quiet sounds by compressing an audio signal’s range. This method shows about compressed audio into a data stream that can be transmitted over any digital medium thus eliminating the need for higher levels of protocol. The signal is stored in a memory and compressed to find the maximum and minimum value and a respective number of samples are calculated between this range. BPF is used to the input for smooth and elimination of noise thus increasing the compression. The output of compressed signal is connected to a transmission channel and can observe on the receiver.

Patent link: https://www.google.com/patents/US20030220801