文件列表:

Software\gen-lic.txt (8184, 2001-10-11)
Software\stl2009 (0, 2010-07-06)
Software\stl2009\basop (0, 2010-07-06)
Software\stl2009\basop\basop.rme (3803, 2009-12-18)
Software\stl2009\basop\basop32.c (130799, 2009-12-18)
Software\stl2009\basop\basop32.h (6710, 2009-12-18)
Software\stl2009\basop\basop_cnt.c (14032, 2009-12-03)
Software\stl2009\basop\control.c (1089, 2009-11-30)
Software\stl2009\basop\control.h (8290, 2009-11-30)
Software\stl2009\basop\count.c (19569, 2009-12-18)
Software\stl2009\basop\count.h (14731, 2009-12-18)
Software\stl2009\basop\enh1632.c (17689, 2009-11-30)
Software\stl2009\basop\enh1632.h (13561, 2009-11-30)
Software\stl2009\basop\enh40.c (29790, 2009-11-30)
Software\stl2009\basop\enh40.h (22813, 2009-11-30)
Software\stl2009\basop\flc (0, 2010-07-06)
Software\stl2009\basop\flc\flc.c (17155, 2009-12-08)
Software\stl2009\basop\flc\flc.h (4304, 2009-12-08)
Software\stl2009\basop\flc\flc.rme (3609, 2009-09-25)
Software\stl2009\basop\flc\flc_example.c (9594, 2009-09-25)
Software\stl2009\basop\flc\makefile.cl (231, 2010-01-18)
Software\stl2009\basop\flc\makefile.unx (414, 2010-01-18)
Software\stl2009\basop\move.h (1954, 2009-11-30)
Software\stl2009\basop\patch.h (1491, 2009-11-30)
Software\stl2009\basop\stl.h (1152, 2009-11-30)
Software\stl2009\basop\typedef.h (2995, 2009-11-30)
Software\stl2009\basop\typedefs.h (5955, 2009-11-30)
Software\stl2009\bin (0, 2010-07-06)
Software\stl2009\bin\rm.bat (573, 2000-03-06)
Software\stl2009\bin\swapover.bat (522, 2000-04-06)
Software\stl2009\binUnix (0, 2010-07-06)
Software\stl2009\clear.bat (174, 2008-10-08)
Software\stl2009\clmk.bat (165, 2009-11-30)
Software\stl2009\eid (0, 2010-07-06)
Software\stl2009\eid\ascii-bs.awk (582, 2001-05-23)
Software\stl2009\eid\bs-stats.c (20141, 2010-02-15)
Software\stl2009\eid\bs-stats.c.org (20009, 2009-11-30)
Software\stl2009\eid\cvt-head.c (21980, 2010-02-02)
Software\stl2009\eid\cvt-head.c.org (21889, 2009-11-30)
Software\stl2009\eid\dec-patt.c (19779, 2010-02-02)
... ...

14/4/93 - IS54 US Cellular Coder This package is not very user friendly, but it works. To compile edit the Makefile to change the compilations flags. If you are not using SPPACK headers, remove the SPPACK flag from the compile line. Change the hardwired pathnames ( /usr/kroon ..) in init.c to the directory that will contain these files. It runs successfully on SGI R4000 and Sparc stations, and it has been claimed that it will run on a PC with Turbo C. For questions contact Peter Kroon kroon@research.att.com MH x7000 /************************************************************************** (C) Copyright 1990, Motorola Inc., U.S.A. Note: Reproduction and use for the development of North American digital cellular standards or development of digital speech coding standards within the International Telecommunications Union - Telecommunications Standardization Sector is authorized by Motorola Inc. No other use is intended or authorized. The availability of this material does not provide any license by implication, estoppel, or otherwise under any patent rights of Motorola Inc. or others covering any use of the contents herein. Any copies or derivative works must incude this and all other proprietary notices. Systems Research Laboratories Chicago Corporate Research and Development Center Motorola Inc. **************************************************************************/ 1. General Description The NADC reference coder is a C language program which implements the chosen standard NADC speech coding algorithm. This document is a description of the program. 1.1 Files The NADC reference coder comprises several C language source files. The "main" function exists in the file "vselp.c". All of the other .c files contain functions which are called at least indirectly from vselp.c. The file "vparams.h" contains macro definitions and external variable declarations which are needed by nearly every source file, so it is included in nearly every source file. The files with the ".i" extension contain C code that is expanded in line with the "include" preprocessor directive. 1.2 General Flow and Structure When the coder is run, it first prompts for running conditions (or reads them from a file). It then initializes parameters and tables. These steps are accomplished through calls to the functions getParams(), calcParams(), and initTables(). The analysis then begins. One frame of the input speech is high-pass filtered, then the Fixed Point Lattice Technique is applied to find the reflection coefficients. These reflection coefficients are then converted to direct-form coefficients. To obtain coefficients for each subframe, the direct-form coefficients for the current frame and the last frame are linearly interpolated. These steps are accomplished with calls to the functions FLATV(), RCTOA(), and INTERPOLATE(). The analysis is completed by determining the excitation for each subframe. This is done in the function T_SUB(). The input speech is first sent through the W(z) spectral weighting filter. The codebook searches are then performed; the adaptive codebook search (lag search) being done first. The gains applied to the excitation vectors from the codebooks are then determined, and some processing is done to set up needed states for the next subframe. These steps are accomplished with calls to the functions LAG_SEARCH(), DECORR(), V_SRCH(), and G_QUANT(). Filtering is done with the functions DIR(), I_DIR() and ZI_DIR(). Functions for constructing vectors are P_EX(), B_CON(), V_CON(), and EXCITE(). The coded speech is written to an internal buffer, but may also be written out to a file. The coded speech output may be written in two formats, one which is readable by the decoder portion of the program, and one which is human-readable. The synthesis is performed on either the internal codes, or on codes from a file written out by the analysis section. The first step in the analysis is to convert the reflection coefficients to direct-form. The second step determines the two other sets of coefficients that are needed in the synthesis: they are the numerator and denominator coefficients of the adaptive spectral postfilter. In the third step the coefficient sets are interpolated to obtain the coefficients to be used in each subframe. These steps are accomplished by the functions ASST() and INTERPOLATE(). The excitation vector for the synthesis is built in the function R_SUB(). The speech is the synthesized through the synthesis filter, and then sent through the adaptive spectral post-filter. Functions used are P_EX(), B_CON(), V_CON() and EXCITE() to generate the excitation; and DIR() and I_DIR() to perform the filtering. The synthesized speech is then converted to 16-bit integer representation and put out to a file. 2. How to Compile the Coder This code is maintained with "make", which is a program for maintaining programs. If your system runs UNIX, information is available in the "make" manual page. If you are not planning to run this on a UNIX machine, you will have to either use some software management tool other than "make", or maintain the code yourself. Even if you don't use "make" to manage this code, it would be a good idea to understand the file that "make" uses to maintain the code, called "makefile". All of the source file dependencies are documented in "makefile". Notice, also, that the "makefile" defines "FTYPE" as "float" globally. If you do not use make, you will have to include a similar definition in your management tool. If you are on a UNIX machine, first make a subdirectory in the directory where you have the source code, and call the new subdirectory "obj". Then type "make uvselp". The "make" program will compile and link all the necessary object files and produce an executable file called "uvselp". If you have problems compiling, first check the makefile to insure that the compilation statements in it make sense for your C compiler. The code is ANSI C compatible, and has been ported to as many other compilers as we could get our hands on. 3. How to Run the Coder After compiling, the coder program may be run by typing "uvselp". The first prompt asks whether to run both the encoder and decoder or the decoder only. If you want to process speech and put out a coded speech file, choose the encoder/decoder option. If you want to synthesize speech from a coded speech file which already exists, choose the decoder only option. The format for the coded speech file is documented below. After the initial prompt, you will be prompted for more information (see next section). Finally, you will be prompted for the names of input speech (or coded speech) files, and output speech files. The coder expects speech data in binary (Motorola, not Intel) format, with 16-bit samples. To make running the coder less tedious, you may specify an options file when the coder is run. The program will then read from this file rather than prompting the user. To use a ".prm" file, run the executable by typing "uvselp filename.prm", substituting your ".prm" filename. The following .prm files are provided uvselp.prm - runs encoded/decoder and produces a bstream file synpf.prm - runs decoder and produces a postfiltered output synnpf.prm - runs decoder and produces an unpostfiltered output All these scripts use fixed filenames INPUT - sampled input data OUTPUT - nonpostfiltered output OUTPUTPF - postfiltered output BSTREAM - bstream file LOG - diagnostics file 3.1 Coder options 3.1.1 Put out codes in readable file (Encoder/decoder option only) This option is useful for visual inspection of the coded parameters. The format for one frame is: frameNumber R0 k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 lag code1 code2 gsp0 (of subframe 1) lag code1 code2 gsp0 (of subframe 2) lag code1 code2 gsp0 (of subframe 3) lag code1 code2 gsp0 (of subframe 4) 3.1.2 Put out packed ASCII hex coded stream (Encoder/decoder option only) This option puts out the coded parameters in a packed ASCII-hex format, one frame per line. All of the coded parameters for one frame are packed into a single bit-stream according to their respective bit allocations: Bits: Parameter: 1-6 (6) k1 7-11 (5) k2 12-16 (5) k3 17-20 (4) k4 21-24 (4) k5 25-27 (3) k6 28-30 (3) k7 31-33 (3) k8 34-36 (3) k9 37-38 (2) k10 39-43 (5) R0 44-50 (7) lag, subframe 1 51-58 (8) gsp0, s.f. 1 59-65 (7) vselp code1, s.f. 1 66-72 (7) vselp code2, s.f. 1 73-79 (7) lag, s.f. 2 80-87 (8) gsp0, s.f. 2 88-94 (7) vselp code1, s.f. 2 95-101 (7) vselp code2, s.f. 2 102-108 (7) lag, s.f. 3 109-116 (8) gsp0, s.f. 3 117-123 (7) vselp code1, s.f. 3 124-130 (7) vselp code2, s.f. 3 131-137 (7) lag, s.f. 4 138-145 (8) gsp0, s.f. 4 146-152 (7) vselp code1, s.f. 4 153-159 (7) vselp code2, s.f. 4 The bits for each coded parameter are ordered MSB first to LSB last. This bit-stream is then sectioned into four bit hexadecimal representation, and written out in ascii. The final hexadecimal digit is padded with a zero. 3.1.3 Calculate performance measures (Encoder/decoder option only) This options calculates and displays performance information such as SNR and weighted SNR. 3.1.4 Apply post-filter to synthesis This option allows you to include, or not to include, spectral post-filtering. 3.2 Floating point precision As mentioned above, the floating point type may be defined as "float" globally. If more precision is required, this argument may be changed to "double". 4. Included speech files Two speech files have been included: feml1.sp and male1.sp. Also included are the coded versions of these files: feml1.sc and male1.sc. These coded speech files are in the format mention above. Decoded (re-synthesized) speech files are feml1.op, male1.op; and feml1.on, male1.on. The first two were reconstructed using the spectral post- filter; the last two were reconstructed without post-filtering. Note that due to differences in compilers and machine architecture there is no guarantee that your output matches the output files provided. However, there should be no perceptual differences. 5. Modifications The source files were obtained from the IS85 document. The following modifications were made: 1) The option for number of frames to process has been disabled (vselp.c) 2) getp.c has been modified to read also the filenames from the *.prm file

近期下载者：

相关文件：

评论：[我要评论] [举报此文件]

收藏者：