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IRIX Base Documentation 1998 November
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IRIX 6.5.2 Base Documentation November 1998.img
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catman
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cat1
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dmedia
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aifcdecompress.z
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aifcdecompress
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1998-10-30
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133 lines
aaaaiiiiffffccccccccoooommmmpppprrrreeeessssssss((((1111)))) aaaaiiiiffffccccccccoooommmmpppprrrreeeessssssss((((1111))))
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aifcdecompress - decompress the audio data in an AIFF-C file
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aifcdecompress [-verbose] infile.aifc outfile.aifc
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
_a_i_f_c_d_e_c_o_m_p_r_e_s_s is a command-line program which reads an AIFF-C compressed
digital audio input file, and copies the header information and sample
data to a AIFF-C uncompressed digital audio output file.
The output file will contain copies of all the AIFF-C chunks in the
original input file. The chunks may not appear in exactly the same order
as in the original file.
_a_i_f_c_d_e_c_o_m_p_r_e_s_s decodes data which has been compressed using one of the
algorithms supported by the SGI audio file library:
_G._7_2_2 CCITT G.722 ADPCM 4:1 compression recommended for 16-kHz, 16-bit
mono or stereo data. The compression algorithm currently cannot
handle more than two channels.
_m_u-_l_a_w CCITT G.711 mu-law 2:1 compression recommended for 8-kHz, 16-bit
(mono or multichannel) data.
_A-_l_a_w CCITT G.711 A-law 2:1 compression recommended for 8-kHz, 16-bit
(mono or multichannel) data.
_A_w_a_r_e _M_P_E_G
MPEG I layer 1 or 2 audio compression implemented by Aware, Inc.
for 32, 44.1, or 48 kHz mono or stereo 16-bit data.
_A_w_a_r_e _M_u_l_t_i_R_a_t_e
Aware proprietary MultiRate near-lossless or lossless audio
compression. for mono or stereo 16-bit data at any rate.
If the input AIFF-C file parses correctly, and the output file is written
with no errors, _a_i_f_c_d_e_c_o_m_p_r_e_s_s returns 0. If there is an error,
_a_i_f_c_d_e_c_o_m_p_r_e_s_s returns 1.
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aaaaiiiiffffccccccccoooommmmpppprrrreeeessssssss((((1111)))) aaaaiiiiffffccccccccoooommmmpppprrrreeeessssssss((((1111))))
If invoked with no arguments, _a_i_f_c_d_e_c_o_m_p_r_e_s_s displays help.
If the verbose option is specified, _a_i_f_c_d_e_c_o_m_p_r_e_s_s periodically prints
messages as sample data is copied from the input file to the output file.
The AIFF and AIFF-C file format specifications are published by Apple
Computer Inc.
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Silicon Graphics Inc.
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playaifc(1), recordaifc(1),
aiff2aifc(1), aifccompress(1),
dmconvert(1), mediaconvert(1),
AIFF-C File Format Specification
AFintro(3A), Introduction to the Audio File Library
aware(5)
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