https://github.com/njh/twolame

MPEG Audio Layer 2 (MP2) encoder
https://github.com/njh/twolame

encoder mp2 mpeg-audio

Last synced: about 2 months ago
JSON representation

MPEG Audio Layer 2 (MP2) encoder

• Host: GitHub
• URL: https://github.com/njh/twolame
• Owner: njh
• License: lgpl-2.1
• Created: 2011-01-01T22:17:44.000Z (almost 14 years ago)
• Default Branch: main
• Last Pushed: 2023-08-21T14:28:39.000Z (over 1 year ago)
• Last Synced: 2024-10-15T16:18:06.201Z (2 months ago)
• Topics: encoder, mp2, mpeg-audio
• Language: C
• Homepage: http://www.twolame.org/
• Size: 1.06 MB
• Stars: 59
• Watchers: 10
• Forks: 34
• Open Issues: 13
• Metadata Files:
  • Readme: README.md
  • License: COPYING
  • Authors: AUTHORS

Awesome Lists containing this project

README

        
TwoLAME

=======

[![Build Status](https://travis-ci.com/njh/twolame.svg?branch=main)](https://travis-ci.com/njh/twolame)

Based on tooLAME by Michael Cheng

All changes to the ISO source are licensed under the LGPL

(see COPYING for details)

    TwoLAME is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    TwoLAME is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with TwoLAME; if not, write to the Free Software

    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

INTRODUCTION

------------

TwoLAME is an optimized MPEG Audio Layer 2 (MP2) encoder.

It is based heavily on:

* tooLAME by Michael Cheng

* the ISO dist10 code

* improvement to algorithms as part of the LAME project (lame.sf.net)

* other contributors (see AUTHORS)

TwoLAME should be able to be used as a drop-in replacement for

LAME (a MPEG Layer 3 encoder). The frontend takes very similar

command line options to LAME, and the backend library has a very

similar API to LAME.

For the latest version of TwoLAME, visit the project homepage:

http://www.twolame.org/

MPEG Audio Layer 2 (MP2)

------------------------

(taken from Wikipedia article on MP2)

MP2 (sometimes incorrectly named Musicam) is a short form of MPEG Audio Layer II,

and it is also used as a file extension for files containing audio data of this

type. While it has largely been superseded by MP3 for PC and Internet applications,

it remains a dominant standard for audio broadcasting as part of the DAB digital

radio and DVB digital television standards. It is also used internally within the

radio industry, for example in NPR's PRSS Content Depot programming distribution

system.

INSTALLATION

------------

Standard automake process:

    ./configure

    make

    make install

REFERENCE PAPERS

----------------

(Specifically Layer II Papers)

Kumar, M & Zubair, M., A high performance software implementation of mpeg audio

encoder, 1996, ICASSP Conf Proceedings (I think)

Fischer, K.A., Calculation of the psychoacoustic simultaneous masked threshold

based on MPEG/Audio Encoder Model One, ICSI Technical Report, 1997

ftp://ftp.icsi.berkeley.edu/pub/real/kyrill/PsychoMpegOne.tar.Z

Hyen-O et al, New Implementation techniques of a real-time mpeg-2 audio encoding

system. p2287, ICASSP 99.

Imai, T., et al, MPEG-1 Audio real-time encoding system, IEEE Trans on Consumer

Electronics, v44, n3 1998. p888

Teh, D., et al, Efficient bit allocation algorithm for ISO/MPEG audio encoder,

Electronics Letters, v34, n8, p721

Murphy, C & Anandakumar, K, Real-time MPEG-1 audio coding and decoding on a DSP

Chip, IEEE Trans on Consumer Electronics, v43, n1, 1997 p40

Hans, M & Bhaskaran, V., A compliant MPEG-1 layer II audio decoder with 16-B

arithmetic operations, IEEE Signal Proc Letters v4 n5 1997 p121