search for: filterbank

...gain mantissa and exponent - multiply fixed-point buffer by mantissa - offset spectrum exponent before IFFT reconstruction What do you think ? Best regards. -- Stephane Lesage ATEIS International -------------- next part -------------- --- C:/Documents and Settings/Stephane/Local Settings/Temp/filterbank-HEAD.2.h Tue Feb 19 19:58:52 2008 +++ c:/Dev/Speex/libspeex/filterbank.h Thu Nov 22 14:18:38 2007 @@ -51,15 +51,15 @@ FilterBank *filterbank_new(int banks, spx_word32_t sampling, int len, int type); -void filterbank_destroy(FilterBank *bank); +void filterbank_destroy(FilterBank *bnk); -void...

Hello, Filterbank.c does not compile on visual studio because of the declaration of : int id1; int id2; in the filterbank_new() procedure (line 45) id1 and id2 must be compiled in the begin of the procedure... Ouss

Hello vorbis developer! I'm not very experienced in informatics, cause i'm only an audio engineer and sorry for my broken english but i have an idea... After the filterbank the maximum aplitude in each band decides about the nessesary bits, then the psychoacoustic model decides how much of the signal can be truncated without hearable noise. What do you think about quantising the remaining bits nonlinear with a logarithmic scale? This would share 25%. Nonlinear quant...

...scheme, but I just apply residual coding on the first order wavelet "image" (for example for a 512x512 image, I just code the errors on the 256x256 wavelet "high-resolution" part), hence the lack of precision.I try to compensate it with a little more neatness of the wavelet 5/3 filterbank, but that's right that precision seems visually more important. Any opinion on this approach or on the codec in general is very welcome. Many thanks again, Raphael -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/theora/attachment...

...i386, X86_64, armv7 and armv7s all passed. But when I build for ARM64 (for iPhone 6), it failed with: /Applications/Xcode.app/Contents/Developer/usr/bin/make all-recursive Making all in libspeexdsp CC preprocess.lo CC jitter.lo CC mdf.lo CC fftwrap.lo CC filterbank.lo CC resample.lo In file included from resample.c:104: ./resample_neon.h:134:12: error: unknown register name 'q0' in asm : "q0"); ^ ./resample_neon.h:195:13: error: invalid output constraint '+l' in asm [len] "+l"...

Hello to everyone! During building speex library for Symbian OS I encountered some problems. All thess problems can be solved by modifying the speex sources. I don't have access to SVN repository of speex, so I will just describe the changes to be done: 1) mmp file in symbian derictory misses windows.c sources. You need to add this string into speex.mmp: SOURCES windows.c 2) Symbian OS

Hi, VS2005 project (libspeex.vcproj) seems to be missing some files, most notably filterbank.c. Also some .h files but that doesn't really matter. Gregg

...=============== 6 x filters.c :367 yi 131 x ltp.c :71 sum 24 x filters.c :367 mem[0] 1057 x lpc.c :193 x[i-lag] 117 x filters.c :326 mem[0] 1295 x filters.c :326 yi 1257 x filters.c :104 mem[0] 7 x filterbank.c :165 tmp 942 x filterbank.c :166 tmp 2387 x lpc.c :193 x[i] 5 x filters.c :105 mem[1] 306618 x filters.c :370 mem[j+1] 21796 x preprocess.c :851 theta 1638 x vbr.c :139 ener2 1635 x vbr.c :136 ener1 8037 x...

Hello, I am thinking about plugging in Discrete Wavelet Transform as described in Vorbis I spec: 1.1.2. Classification Vorbis I is a forward-adaptive monolithic transform CODEC based on the Modified Discrete Cosine Transform. The codec is structured to allow addition of a hybrid wavelet filterbank in Vorbis II to offer better transient response and reproduction using a transform better suited to localized time events. Could anybody tell me if it's good or bad idea? -- Dominik Zalewski Adam Mickiewicz University, Department of Mathematics and Computer Science :: ul.Umultowska 87, room...

...ed. > But when I build for ARM64 (for iPhone 6), it failed with: > /Applications/Xcode.app/Contents/Developer/usr/bin/make all-recursive > Making all in libspeexdsp > CC preprocess.lo > CC jitter.lo > CC mdf.lo > CC fftwrap.lo > CC filterbank.lo > CC resample.lo > In file included from resample.c:104: > ./resample_neon.h:134:12: error: unknown register name 'q0' in asm > : "q0"); > ^ > ./resample_neon.h:195:13: error: invalid output constraint '+l' in asm >...

...EGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +TARGET speexdsp.lib +TARGETTYPE lib +UID 0 +MACRO HAVE_CONFIG_H +SOURCEPATH ..\libspeex +SOURCE buffer.c fftwrap.c filterbank.c +SOURCE jitter.c kiss_fft.c kiss_fftr.c +SOURCE mdf.c preprocess.c resample.c smallft.c +USERINCLUDE . ..\include\speex +SYSTEMINCLUDE \epoc32\include \epoc32\include\libc ..\include Index: symbian/bld.inf =================================================================== --...

...for ARM64 (for iPhone 6), it failed with: >> /Applications/Xcode.app/Contents/Developer/usr/bin/make all-recursive >> Making all in libspeexdsp >> CC preprocess.lo >> CC jitter.lo >> CC mdf.lo >> CC fftwrap.lo >> CC filterbank.lo >> CC resample.lo >> In file included from resample.c:104: >> ./resample_neon.h:134:12: error: unknown register name 'q0' in asm >> : "q0"); >> ^ >> ./resample_neon.h:195:13: error: invalid output constraint '+...

hi, this patch should fix the symbian build. /alfred -------------- next part -------------- A non-text attachment was scrubbed... Name: speex-symbian2.patch Type: text/x-patch Size: 2669 bytes Desc: not available Url : http://lists.xiph.org/pipermail/speex-dev/attachments/20061115/5ac4915e/speex-symbian2.bin

...SOURCE bits.c cb_search.c exc_5_64_table.c exc_5_256_table.c exc_8_128_table.c >> -SOURCE exc_10_16_table.c exc_10_32_table.c exc_20_32_table.c filters.c gain_table.c >> +SOURCE exc_10_16_table.c exc_10_32_table.c exc_20_32_table.c fftwrap.c kiss_fft.c kiss_fftr.c filterbank.c filters.c gain_table.c >> SOURCE gain_table_lbr.c hexc_10_32_table.c hexc_table.c high_lsp_tables.c jitter.c >> SOURCE lbr_48k_tables.c lpc.c lsp.c lsp_tables_nb.c ltp.c math_approx.c mdf.c misc.c >> SOURCE modes.c nb_celp.c preprocess.c quant_lsp.c sb_ce...

Thread-split from the vorbis-mailing list ("Vorbis determined to be as good as MPC at 128 kbps!") <p>On Sun, 30 May 2004, Segher Boessenkool wrote: [Steven So] SS>> If iTunes AAC can encode castanets with much less pre-echo at SS>> ABR 128 kbps, then hopefully there will be an imaginative SS>> (and non-patented) way of doing this in Vorbis without the SS>>

...eex > SOURCE bits.c cb_search.c exc_5_64_table.c exc_5_256_table.c exc_8_128_table.c > -SOURCE exc_10_16_table.c exc_10_32_table.c exc_20_32_table.c filters.c gain_table.c > +SOURCE exc_10_16_table.c exc_10_32_table.c exc_20_32_table.c fftwrap.c kiss_fft.c kiss_fftr.c filterbank.c filters.c gain_table.c > SOURCE gain_table_lbr.c hexc_10_32_table.c hexc_table.c high_lsp_tables.c jitter.c > SOURCE lbr_48k_tables.c lpc.c lsp.c lsp_tables_nb.c ltp.c math_approx.c mdf.c misc.c > SOURCE modes.c nb_celp.c preprocess.c quant_lsp.c sb_celp.c smallft...

On 5/29/07, ALEX NG <alex@gorex.com.hk> wrote: > ok I used your code > it asks me > 1. resample.c > 2. filterbank.c > > why? Seems you're using Speex 1.2beta1 or earlier. Try out 1.2beta2 or svn version. -- Regards, Alexander Chemeris. SIPez LLC. SIP VoIP, IM and Presence Consulting http://www.SIPez.com tel: +1 (617) 273-4000

...i386, X86_64, armv7 and armv7s all passed. But when I build for ARM64 (for iPhone 6), it failed with: /Applications/Xcode.app/Contents/Developer/usr/bin/make all-recursive Making all in libspeexdsp CC preprocess.lo CC jitter.lo CC mdf.lo CC fftwrap.lo CC filterbank.lo CC resample.lo In file included from resample.c:104: ./resample_neon.h:134:12: error: unknown register name 'q0' in asm : "q0"); ^ ./resample_neon.h:195:13: error: invalid output constraint '+l' in asm [len] "+l"...

...sing. http://cnx.org/content/col10303/latest/ Intro to Digital Signal Processing The course provides an introduction to the concepts of digital signal processing (DSP). Some of the main topics covered include DSP systems, image restoration, z-transform, FIR filters, adaptive filters, wavelets, and filterbanks. http://cnx.org/content/col10203/latest/ Methods for Voice Conversion This course explores methods in signal processing to perform voice conversion: producing the words from one speaker in the voice of another. This is the Elec 301 project of Justin Chen, Matthew Hutchinson, Gina Upperman, and Br...

...l and is optimized for visual (subjective) evaluation, not PSNR.Its main feature is again that it would have a little more neatness/sharpness and a little less precision (residual coding is applied on "sub" wavelet images or orders and I take advantage then of the neatness the wavelet 5/3 filterbank can have).The entropy coding schemes for each parts: wavelet coefficients, residuals, are also near optimal as with the best (binarization +) context modeling + arithmetic coders, except for the DC parts where the compression scheme is not optimal, can win 0.7Ko per file in average with the best ar...