search for: highpass

Hi, I am using 1.2beta2 on a C5416 doing narrowband in the decode function I am having a problem with the execution of my program vectoring off to random interrupts that are not used. I have tracked down the error to the highpass function called in nb_decode -very close to the end of the function-context: it is called here: ln 1719 for me if (st->highpass_enabled) highpass(out, out, st->frameSize, (st->isWideband?HIGHPASS_WIDEBAND:HIGHPASS_NARROWBAND)|HIGHPASS_OUTPUT, st->mem_hp); /*for (i=0;i<s...

Hi Jim, First of all - thanks, turning the highpass filter off was what I needed, and the waveforms match now. But, when i did the PESQ tests again I found an interesting result : version 1.0.5 still got a slightly better average score, but the standard deviation on version 1.2 beta1 was much smaller. The cause for that is this - on some samples ver...

Hi, I have been using speex version 1.0.5 on a text-to-speech program. Recently I upgraded to version 1.2beta1 and noticed that the waveform the I got after encoding and decoding on the new versions (beta1,beta2) is much more different than the original than on version 1.0.5. I also ran a PESQ comparison test on 700 voice samples and got better results in the older version (I used quality 9, and

Hello, I have this rare and weird problem in the encoder : when I encode and decode this specific speech sample (Attached) the first frame comes out wrong. I found that the error is in the encoder. My settings are : Version 1.2beta2, on linux, in floating point. Wideband. The highpass filter turned off. Perceptual enhancment is turned off. Quality is 9. The weird thing about it is that if I use different settings (e.g. fixed point, or turn the highpass filter on), or compile a different version or a different operating system then this specific sample comes out fine, although t...

Dr. Williams, I ran across your inquiry on one of the R-help mailing lists regarding digital filter design and implementation. I found no response to your email in the archives and was wondering if you were able to find anything. Thanks, Israel -- Israel Christie, Ph.D. Email: ichristie at gmail.com Phone: 865.766.0214 Mobile: 865.406.4615

Don't know if anybody is still missing the lame oggenc features for resampling, lowpass/highpass filters etc, but I wrote a little script that uses sox to do all the stuff I need to real-time encode oggenc from the radio, or any input device. #!/bin/bash DATE=`date '+%m-%d-%Y-(%H.%M)'` DESTIN=/video/music/perftoday export DATE=$DATE'-PerformanceToday.ogg' sox -V -r 44100 -c...

...ion 12.17.7 Usage: [ gopts ] [ fopts ] ifile [ fopts ] ofile [ effect [ effopts ] ] gopts: -e -h -p -v volume -V fopts: -r rate -c channels -s/-u/-U/-A/-a/-i/-g/-f -b/-w/-l/-d -x effect: avg band bandpass bandreject chorus compand copy dcshift deemph earwax echo echos fade filter flanger highp highpass lowp lowpass mask mcompand noiseprof noisered pan phaser pick pitch polyphase rate repeat resample reverb reverse silence speed stat stretch swap synth trim vibro vol effopts: depends on effect Supported file formats: aiff al au auto avr cdr cvs dat vms gsm hcom la lu maud mp3 nul ossdsp prc r...

...voice samples get a nice weird touch :] ). A side effect is that the result is not only exactly what information the encoder omits, it also contains things that it adds to the sample (artifacts). Leaving out inaudible data, especially lots of high frequencies, give the resulting sample an extreme highpass filter and a swooshy sound that propably comes from those masked sounds (things of lower volume preceded by something loud cannot be percieved well, that's why lossy codecs drop them... as far as I understood). All this is completely normal and appreciated, because it saves us all lots of disks...

...cast2-1] format = mp2 bitrateMode = cbr bitrate = 384 quality = 1.0 server = 127.0.0.1 port = 32710 password = (duh!) sampleRate = 48000 channel = 2 maxBitrate = 384 mountPoint = LiftedRadio_high.mp2 lowpass = -1 highpass = -1 name = SciFiG5.homeip.net description = (MP2:TwoLame-0.3.6 CBR:384K 48kHz:2ch) url = http://www.LiftedRadio.com/ genre = Christian Electronica public = yes aim = scifihomeipnet icq = 272120028 #irc = # An...

...ality; encoderComplexity = complexity; // catch invalid sample rates resulting in invalid mode if ( !pMode ) return; // assert( ( pCodecEncoderState == NULL ) && "encoder already initialized" ); // int enabled = 1; int disabled = 0; // float highpass = 80; // setup encoder pCodecEncoderState = speex_encoder_init( pMode ); // speex_encoder_ctl( pCodecEncoderState, SPEEX_SET_SAMPLING_RATE, &sampleRate ); speex_encoder_ctl( pCodecEncoderState, SPEEX_SET_COMPLEXITY, &encoderComplexity ); speex_encoder_ctl( pCodecEncoderSt...

...2.18.1 Usage: [ gopts ] [ fopts ] ifile [ fopts ] ofile [ effect [ effopts ] ] gopts: -e -h -p -q -S -V fopts: -r rate -c channels -s/-u/-U/-A/-a/-i/-g/-f -b/-w/-l/-d -v volume -x effect: avg band bandpass bandreject chorus compand copy dcshift deemph earwax echo echos fade filter flanger highp highpass lowp lowpass mask mcompand noiseprof noisered pan phaser pick pitch polyphase rate repeat resample reverb reverse silence speed stat stretch swap synth trim vibro vol effopts: depends on effect Supported file formats: aiff al alsa au auto avr cdr cvs dat vms gsm hcom la lu maud nul ossdsp prc raw...

...; > if ( !pMode ) > > return; > > // > > assert( ( pCodecEncoderState == NULL ) && "encoder already > initialized" > > ); > > // > > int enabled = 1; > > int disabled = 0; > > // > > float highpass = 80; > > > > // setup encoder > > pCodecEncoderState = speex_encoder_init( pMode ); > > // > > speex_encoder_ctl( pCodecEncoderState, SPEEX_SET_SAMPLING_RATE, > > &sampleRate ); > > speex_encoder_ctl( pCodecEncoderState, SPEEX_SET_COMPLE...

Hi Aviv, Does the audio sound bad? You can try turning off the highpass filter (which was not in 1.0.5). This code is from ti/testenc-TI-C5x.c in the source tree: /* Turn this off if you want to measure SNR (on by default) */ tmp=0; speex_encoder_ctl(st, SPEEX_SET_HIGHPASS, &tmp); speex_decoder_ctl(dec, SPEEX_SET_HIGHPASS, &tmp); - Jim ----- Or...

...nal package than I do (or knows the maintainer's new address): Subject: question about buttord function in R signal module From: Michael Tiemann <michaeltiemann at mac.com> Date: Thu, 06 Nov 2008 07:18:58 -0500 To: tshort at eprisolutions.com Tom, I was trying to compare lowpass and highpass filters and found that the buttord example in the manual worked as expected, namely the $type was "low". But when I reversed the Wp and Ws parameters, it resulted in an object with an empty $type instead of $type being "high". I looked at the source code and found an obvio...

Hi everybody I wrote a couple of months ago about implementing the opus codec on a DK52 from Nordic (nrf52832 MCU, Cortex M4). In the meantime I got a bit further and would again like to ask some questions. My settings: I included all the opus files into my project (opus-1.2.1) Defined: FIXED POINT, VAR_ARRAYS, DISABLE FLOAT API, OPUS_BUILD, CELT_MODE_ONLY I am able to allocate enough memory

Hi list, I have an 44100 Hz file with human voice, stereo with 16Bit. When convertig this to 8 kHz, mono I loose a lot of quality and have some ground noise. I tried several sox options but without success. Can somebody help.... best regards Thomas

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...atch invalid sample rates resulting in invalid mode > if ( !pMode ) > return; > // > assert( ( pCodecEncoderState == NULL ) && "encoder already initialized" > ); > // > int enabled = 1; > int disabled = 0; > // > float highpass = 80; > > // setup encoder > pCodecEncoderState = speex_encoder_init( pMode ); > // > speex_encoder_ctl( pCodecEncoderState, SPEEX_SET_SAMPLING_RATE, > &sampleRate ); > speex_encoder_ctl( pCodecEncoderState, SPEEX_SET_COMPLEXITY, > &encoderComplexity )...

...] > > The decoded values start out at 0, go to -16 up, then up to 135 and then > slowly down to the 17 (see attached file). > Furthermore, I do not see much of a change if I increase the complexity. You're encoding a signal with a constant (DC) offset. opus_encode() includes a 3 Hz highpass filter to remove the (inaudible) DC component, because it screws up other parts of the codec (mainly it would create MDCT leakage that is completely unmasked). So you shouldn't expect to get your constant values of 100 back. In general the numeric values of the output aren't guaranteed to...

...2.18.1 Usage: [ gopts ] [ fopts ] ifile [ fopts ] ofile [ effect [ effopts ] ] gopts: -e -h -p -q -S -V fopts: -r rate -c channels -s/-u/-U/-A/-a/-i/-g/-f -b/-w/-l/-d -v volume -x effect: avg band bandpass bandreject chorus compand copy dcshift deemph earwax echo echos fade filter flanger highp highpass lowp lowpass mask mcompand noiseprof noisered pan phaser pick pitch polyphase rate repeat resample reverb reverse silence speed stat stretch swap synth trim vibro vol effopts: depends on effect Supported file formats: aiff al alsa au auto avr cdr cvs dat vms gsm hcom la lu maud nul ossdsp prc raw...