search for: formant

...ular I would want to use R to formulate and evaluate specific models. So I would like to ask R people for their recommendations for a program which would a) Take as input a sound file in one of the common formats (".wav", ".au") b) perform at least basic phonetic analysis (formants, F0, spectrograms, ... ) b) Save to file a representation of the basic phonetic analysis which it has done, in a form which R can readily import and use. I've come across 'praat': http://www.praat.org which seems to offer a spohisticated range of analyses, though it'...

Hi,. We have 2 values (first formant F1, second formant F2) for a given phoneme for six languages. We want to see whether the languages are significantly different one from another for this given phoneme. We have done a manova on our data and it works well, but we doesn't allow us to see which pair of languages are different....

Hi I have gone through the document available in the net regarding the Vorbis encoder /Decoder. Based on that i have prepared a understanding document on the encoder/decoder block. I would like to know whether my understanding of the coder is OK. If there are any other additional block /information pl. provide me with the same. Thanks and regards S.Padmashri <HR NOSHADE> <UL>

Hello kind developers, I am planning on creating a steganographic extension for speex/CELP. Since speex/CELP is lossy, there should be quite many bits that one can use for hiding data. I'm familiar with the principles of CELP (two filter loops, one for pitch, the other for formants, let the raw speech frame run through those filter loops, take residue signal, map it on a codebook entry, transmit the the two filters and the codebook key). Please correct me if I understood something wrong. As if right now, my questions are more from an engineers point of view (which I could n...

...s a more commonly used term for this is "noise shaping"). >>- which bits of a transmitted frame are the two filters, which are >>codebook keys? > > what do you mean? I mean, that we send the speech frame by frame. So a frame needs to contain the two filters (pitch and formants), the first couple of values (raw, now we can apply the filter to predict the rest of the frame), and then the codebook keys of which the corresponding entries are added to get raw speech data back. Ciao, Bj?rn -- You are a bundle of energy, always on the go. -- Important! Please recognize...

Hallo, I have this dataset with repeated measures. There are two within-subject factors, "formant" (2 levels: 1 and 2) and "f2 Ref" (25 levels: 670, 729, 788, 846, 905, 1080, 1100, 1120, 1140, 1170, 1480, 1470, 1450, 1440, 1430, 1890, 1840, 1790, 1740, 1690, 2290, 2210, 2120, 2040, 1950), and one between-subject factor, lang (2 levels:1 and 2). The response variable is &q...

...d > somewhere "historically", during the analog > era, this number is used. or maybe 10 is analagous > to a perfect number! ;-) In linear prediction the number of coefficients required for a suitable model are determined from the spectral content of the source. For each peak (formant) frequency in the spectrum 1 pole is required. Two coefficients are required for each pole in the model. With human speech it is typical to see one peak resonance for the fundamental frequency (typically 50-440Hz) and one additional peak per 1000Hz. From this we can see that the best order for a...

...kely to be heard. You would need to use "fractions of bits" at a time. Even then, it may be hard to hide data efficiently (so it's hard to detect whether steganography was applied). > I'm familiar with the principles of CELP (two filter loops, one for > pitch, the other for formants, let the raw speech frame run through > those filter loops, take residue signal, map it on a codebook entry, > transmit the the two filters and the codebook key). Please correct > me if I understood something wrong. That's pretty much how it works (of course, there's plenty of de...

Dear List Using dovecot 2.1.7 with LMTP and exim4 I want to accept local parts regardless of their case. Exim does all virtual alias handling and delivers the messages to dovecot LMTP addressed to the right mailbox name. This works well except for addresses which do not need to be resolved by exim and which do have the "wrong" case in the local part. For example: There is a

...and the residue coefficients results in reconstructing (a quantized version of) the original MDCT spectrum. (this floor curve need not be generated solely from analysis of the MDCT domain data, obviously, although the current code does it this way.) The trick is that the floor curve tends to have formant-like features due to the rolloff properties of masking tones. These can be encoded into a low-order IIR LPC filter (20-30 poles, simplified direct form II. Basic speech compression stuff). Speech compressions (and, I might add, TwinVQ [VQF]) encode 20 pole systems into 20-28 bits. With a little...

Hi, We would like to announce the first release of the Speex project. Speex (http://speex.sourceforge.net) is an open-source (LGPL), patent-free compression format allowing an alternative to expensive proprietary codecs. Unlike Ogg Vorbis which compresses general audio, Speex is designed especially for speech. For that reason, Speex is meant to be a complement to Vorbis. Since it is specialized