This was a group Experiment - finding out
relevant papers and patents on DSPP applications.
We, as a group of 5 - Abhijit Haridas, Shreyas
Padte, Rishi Gupta, 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 20160344356 A1
Publication date: Nov 24, 2016
Inventors: Peter Grosche, Yue Lang, Qing Zhang
Summary:
This is the audio
compression system comprising of a digital filter for filtering the input audio
signal, where the digital filter comprises of a frequency transfer function
having a magnitude over frequency, where the magnitude is formed by an equal
loudness curve of a human ear to obtain a filtered audio signal, and a
compressor which is configured to compress the input audio signal upon the
basis of the filtered audio signal to obtain a compressed audio signal.
Patent link: https://www.google.com/patents/US20160344356
Paper Review
Paper: International Journal of Engineering and
Innovative Technology ISO 9001:2008 Certified
Volume 4, Issue 1, July 2014
Summary:
Audio compression has been carried out by various
methods such as Discrete Cosine Transform, Run Length and High order shift
encoding. Audio compression addresses the problem of reducing the amount of
data required to represent digital audio. Also to overcome the effect of
quantized noise, which can be noticed at low energized audio segments, a post
processing filtering stage is introduced as last stage of decoding process.
Plagiarism link: https://drive.google.com/open?id=0Bz4XFYwHwUBVRS1YOWN3T05KWms
Nice
ReplyDeleteAudio compressuib redeuces the memory required for storage
ReplyDeleteYes that was our implementation.
Deleteaudio compression is used in cd mp3 encoding
ReplyDeleteCompression is needed everywhere.
DeleteIs useful in less memory application
ReplyDeleteInteresting application
ReplyDeleteThanks
Deletegood
ReplyDelete