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1995-11-13
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5. _S_o_u_n_d__F_i_l_e_r
Sound Filer is a graphical utility for browsing and
auditioning sound files, and for converting between
different sound file formats, audio sample data formats, and
sampling rates. Currently supported sound formats are:
+o _a_i_f_c AIFF-C file format
+o _a_i_f_f AIFF file format
+o _n_e_x_t NeXT/Sunr Format
+o _w_a_v_e Microsoftr RIFF WAVE Format
The supported data formats are raw signed or unsigned pulse
code modulation, mu-law, and floating point.
You can invoke Sound Filer from the command-line with the
command _s_o_u_n_d_f_i_l_e_r.
The command-line utility programs _s_f_i_n_f_o(1), _s_f_p_l_a_y(1), and
_s_f_c_o_n_v_e_r_t(1) included the IRIS Digital Media Execution
Environment 5.3 subsystem _d_m_e_d_i_a__e_o_e._s_w._a_u_d_i_o provide
similar functionality.
See the man page _s_o_u_n_d_f_i_l_e_r(1) or Sound Filer's on-line help
for more information.
The version of Sound Filer included in IRIS Digital Media
Tools 5.5 is the same as the version that was shipped with
the 5.3 release.
5.1 _B_u_g__F_i_x_e_s
This section lists the bugs fixed since between the 5.2 and
5.3 releases.
+o The version of Sound Filer shipped with 5.2 and earlier
releases wrote an incorrect value into the AIFF/AIFF-C
FORM chunk size field in the file header. The FORM
chunk size written into the header was 8 bytes greater
than the actual chunk data size. This error generated
AIFF files which were incompatable with several Mac
applications. The 5.3 version of Sound Filer now
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generates AIFF files which can be imported by these
applications.
5.2 _K_n_o_w_n__P_r_o_b_l_e_m_s__a_n_d__W_o_r_k_a_r_o_u_n_d_s
This section lists known problems in Sound Filer and ways to
work around them.
+o Sound Filer does not allow you to convert from or to
MPEG audio bitstream files. Use the new tool to convert
between the AIFF-C/AIFF formats and MPEG-1 layer I or
layer II audio bitstream files.
+o When Sound Filer converts between AIFF-C and AIFF
files, it deletes many of the auxiliary header fields,
such as author string, sampler parameters, and
application-specific data. To convert between AIFF-C
and AIFF files, use the programs _a_i_f_f_2_a_i_f_c(1) and
_a_i_f_c_2_a_i_f_f(1) provided with IRIS Digital Media Execution
Environment 5.3.
+o Sound Filer does not support the standard audio
compression algorithms registered by Silicon Graphics
for use with AIFF-C files. To compress or decompress
AIFF-C audio data, use _a_i_f_c_c_o_m_p_r_e_s_s(1) and
_a_i_f_c_d_e_c_o_m_p_r_e_s_s(1) provided with IRIS Digital Media
Execution Environment 5.3. To directly play or record
files that contain compressed audio data, use _p_l_a_y_a_i_f_c
and _r_e_c_o_r_d_a_i_f_c, which are also supplied in
_d_m_e_d_i_a__e_o_e._s_w._a_u_d_i_o.
+o Sound Filer's convert window does not currently have a
selection for big- or little-endian. AIFF-C, AIFF,
Next/Sun, and raw data files are assumed to contain
big-endian data. WAVE files are assumed to contain
little-endian data. To read or write little-endian raw
data, use _s_f_c_o_n_v_e_r_t.