Audio timescale pitch modification

Audio timescale pitch modification - Factbites
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Topic: Audio timescale pitch modification

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	Audio timescale-pitch modification - Wikipedia, the free encyclopedia
		Pitch scaling or pitch shifting is the reverse: the process of changing the pitch without affecting the speed.
		High-end commercial audio processing packages either combine the two techniques (for example by separating the signal into sinusoid and transient waveforms), or use other techniques based on the wavelet transform, or artificial neural network processing, producing the highest-quality time stretching.
		Similarly, a literal pitch scaling, in which the musical pitch is scaled (a higher note would be shifted at a greater interval than a lower note) is highly unusual, and not musical.
	en.wikipedia.org /wiki/Audio_timescale-pitch_modification (948 words)

	Category:Audio - What-Means.com
		Audio pertains to the recording, transmission, and reproduction of sound.
	www.what-means.com /encyclopedia/Category:Audio (23 words)

	E4810 - projects
		This is a widespread problem in speech and music processing: identifying the local periodicity of a sound with a perceived pitch.
		These projects reflect my personal bias towards audio, but projects concerned with images, or any other kind of signal processing, are equally acceptable.
		Audio signal compression is a current hot topic.
	www.ee.columbia.edu /~dpwe/e4810/projects.html (1754 words)

	Sound Effects - Sound effects
		Level compression is not to be confused with audio data compression, where the amount of data is reduced without affecting the amplitude of the sound it represents.
		Sound effects or audio effects are artificially created or enhanced sounds, or sound processes used to emphasize artistic or other content of movies, video games, music, or other media.
		Once the sound effects are recorded or captured, they are usually loaded into a computer integrated with an audio non-linear editing system.
	amice.clubblogs.com /amiceChina/Patrick_Dempsey/Kosovo/Petropavl/Sound_effects (3278 words)

	[Shortopedia] Sound effects : Audio level compression , Audio timescale-pitch modification , Falling scream , Foley artist , ...
		A sampler is an electronic musical instrument that can record and store audio signal samples, generally recordings of existing sounds, and play them back at a range of pitches.
		Audio level compression, also called compression or limiting, is a process that manipulates the dynamic range of an audio signal.
		Sound effects or audio effects are artificially created or enhanced sounds, or sound processes used to emphasize artistic or other content of movies, video games, music, or other media.
	www.shortopedia.com /S/O/Sound_effects (648 words)

	Time-Scale Modification Of Audio Signals With Combined Harmonic And Wavelet Representations - Hamdy, Tewfik, Chen, Takagi (ResearchIndex)
		Audio Watermarking By Time-Scale Modification - Mohamed Mansour And (2001)
		Hamdy, A. Tewfik, T. Chen, and S. Takagi, "Time-scale modification of audio signals with combined harmonic and wavelet representations ", in Proc.
		10 Algorithm for Extraction of Pitch and Pitch Salience from Co..
	citeseer.ist.psu.edu /hamdy97timescale.html (631 words)

	rfc2326
		For audio, it may time-scale the audio while preserving pitch or, less desirably, deliver fragments of audio.
		If a media unit (such as an audio or video frame) starts presentation at exactly the pause point, it is not played or recorded.
		For example, the RTSP URL: rtsp://media.example.com:554/twister/audiotrack identifies the audio stream within the presentation "twister", which can be controlled via RTSP requests issued over a TCP connection to port 554 of host media.example.com.
	ietfreport.isoc.org /idref/rfc2326 (13516 words)

	Digital sampling: Encyclopedia topic
		For example, CD quality audio is sampled at a frequency of 44100 times per second.
		The measurement or "sample" is taken at a regular interval.
		Each sample is 16-bits which can represent 2^16 = 65536 unique amplitude values for that point in time.
	www.absoluteastronomy.com /reference/digital_sampling (182 words)

	Telecine -
		This causes a noticeable increase in audio pitch by about one semitone, which is sometimes corrected using a pitch shifter, though pitch shifting is a recent innovation and precedes an alternative method of telecine for 25 frames/s formats.
		The result is 24 frames of film fitting neatly into a full 25 frames (50 fields) of video per second, with the speed and pitch of the telecined presentation being identical to that of the original film.
		Undoubtedly this method was born out of a frustration with the faster, higher pitched soundtracks that traditionally accompanied films telecined for PAL and SECAM audiences.
	psychcentral.com /psypsych/Telecine (1627 words)

	Sensory Processing - PSI Group, University of Toronto
		Timescale modification without pitch or format distortion can be achieved by stochastically eliminating or replicating segments in the time domain directly.
		More sophisticated operations, such as pitch modification, gender and voice conversion, and companding (volume equalization) are also naturally performed without the need for a cepstral or other such representation.
		For example, we can estimate the pitch as the reciprocal of the segment length.
	www.psi.toronto.edu /sensProcessing.html (940 words)

	School of Engineering, Science and Design
		Timescale modification is the alteration of a signal's duration without disturbing local periodicity (pitch).
		Timescale Modification of Speech and Audio Signals via Adaptation of the Sampling Method
		The techniques under development aim to avoid the need for any overlap in the concatenation process, thus avoiding any of the associated problems.
	www.sesd.gcal.ac.uk /projdon.html (102 words)

	Part IV. Reference
		diskin2 - Reads audio data from a file, and can alter its pitch using one of several available interpolation types, as well as convert the sample rate to match the orchestra sr setting.
		gogobel - Audio output is a tone related to the striking of a cow bell or similar.
		outc - Writes audio data with an arbitrary number of channels to an external device or stream.
	www.csounds.com /manual/html/PartReference.html (8036 words)

	Category:Digital signal processing - Indopedia, the Indological knowledgebase
		It has three major subfields: audio signal processing, digital image processing and speech processing.
		DSP and analog signal processing are subsets of signal processing.
		For more information, please see the main article about Digital signal processing.
	www.indopedia.org /Category:Digital_signal_processing.html (164 words)

	TI Offers Ready-to-Use Design for Portable Digital Audio Players
		High-quality timescale modification (TSM) algorithm, enabling the playback of recorded sound with normal pitch at up to twice the speed, or slowing playback down to half the speed.
		The low-power, high performance DSP can handle all of the processing required for a portable audio player with overhead remaining to allow manufacturers to differentiate their products by adding additional features, such as TI's proprietary Time Scale Modification (TSM) software or 3rd Party post-processing algorithms.
		Manufacturers can also plan to design their next-generation hard disk drive-based portable audio players on a new feature-enhanced reference design from TI, which is expected to be available in the third quarter of this year.
	www.embeddedstar.com /press/content/2004/6/embedded14854.html (600 words)

	Audio Clip Free Resources
		The simplest way to change the duration or pitch of a digital audio clip is to resample it...
		Audio clip of Lindbergh on non-intervention in 1941.On September 11...
		The idea is pretty simple: People who create video, music, photos, audio clips and other personal media can store their stuff for free on Ourmedia's servers forever, as long as they're willing to share their works...
	www.theaudioreference.info /audio-clip-free (1412 words)

	:::► Dictionary of Meaning www.mauspfeil.net ◄:::
		There you will find a list of all editors and the possibility to edit the original text of the article Pitch.
	www.mauspfeil.net /pitch.html (68 words)

	ElectronicsWeekly.com - Low power DSP design for digital audio
		Other software support includes a timescale modification (TSM) algorithm, enabling the playback of recorded sound with normal pitch at up to twice the speed, or slowing playback down to half the speed.
		Based on the firm’s range of digital audio digital signal processors (DSP), the emphasis is on low power consumption.
		Texas Instruments is offering a number of reference designs for portable digital audio products.
	www.electronicsweekly.com /Articles/Article.aspx?liArticleID=31968&PrinterFriendly=true (170 words)

	A Phase Vocoder in Matlab
		The Phase Vocoder [FlanG66, Dols86, LaroD99] is an algorithm for timescale modification of audio.
		In this case, we shift the pitch up by a major third (by extending duration with the phase vocoder, then resampling to the original length), then add it back to the initial sound to give harmonization:
		IEEE Workshop on Applications of Signal Processing to Audio and Acoustics.
	www.ee.columbia.edu /~dpwe/resources/matlab/pvoc (747 words)

	audio illusion in Ontario
		The words are disguised in the audio illusion to bypass the conscious mind.
		The illusion is of a pitch increasing in frequency without resolution 1.
		SPECIAL OFFERS TOP SELLERS AUDIO BOOKS Paperbacks 3 for £12 NEW anecdotal case that this illusion is essential to being human stephen a.
	www.canadianbusinessdirectory.ca /historyon_audio_illusion.htm (222 words)

	Abstract: Norms and Exploitations: Mapping Meaning onto Use
		In this talk, I will give several examples of this paradigm, showing how inference in very simple models can be used to perform surprisingly complex speech processing tasks including denoising, source separation, pitch tracking, timescale modification and estimation of articulatory movements from audio.
		An efficient algorithm for inferring these boundaries is derived from a simple probabilistic generative model for segments, which gives excellent results on pitch tracking, voiced/unvoiced detection and timescale modification.
		I will also describe a purely time domain approach to pitch processing which identifies waveform samples at the boundaries between glottal pulse periods (in voiced speech) or at the boundaries between unvoiced segments.
	www.clsp.jhu.edu /seminars/viewabstract.php?sid=104897508 (305 words)

	[music-dsp] Time or pitch scaling modeling
		Although this algorithm is probably a lot better Cool Edit or Sound Forge, so doesn't answer the original question, it's definitely worth a look: "Automatic technique in frequency domain for near-lossless time-scale modification of audio" Jordi Bonada, Proceedings of the International Computer Music Conference 2000.
		If I made the bands wider, their was less gargling, but then the pitch was noticably ruined.
		Next message: [music-dsp] Time or pitch scaling modeling
	shoko.calarts.edu /pipermail/music-dsp/2003-April/023065.html (469 words)

	selection
		O'Brien and A. Monaghan: `Shape Invariant Timescale Modification of Speech using a Harmonic Model', in proceedings of ICASSP '99, Arizona.
		O'Brien and A. Monaghan: `Shape Invariant Pitch Modification of Speech using a Harmonic Model', in proceedings of EUROSPEECH '99, Budapest.
		O'Brien and A. Monaghan: `Shape Invariant Pitch and Time-Scale Modification of Speech based on a Harmonic Model', in Keller, Bailly, Monaghan, Terken and Huckvale (eds), 2001.
	www.compapp.dcu.ie /~alex/PUB/selection.html (966 words)

	Education - Information - Educational Resources - Encyclopedia - Music - Au
		Disclaimer: Uploading or downloading of copyrighted works without permission or authorization of copyright holders may be illegal and subject to civil or criminal liability and penalties.
		Our website offers advanced search for bands and artists bio and albums and browse options for artist band biographies resources and information.
	education.music.us /Au.htm (282 words)

	[music-dsp] Pitch without formant change
		TimeScale Audio Mod : http://mffmtimescale.sourceforge.net/ Multimedia Time Code : http://mffmtimecode.sourceforge.net/ 3D Audio Library : http://mffm3daudiolib.sourceforge.net/ dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://shoko.calarts.edu/musicdsp/
		> > > > One idea is to firstly time stretch the audio without changing pitch, then > > resample to the original length.
		> > Time stretching is typically called Time Scale Audio Modification.
	shoko.calarts.edu /pipermail/music-dsp/2001-December/013474.html (182 words)

	Publications
		Monaghan, A.I.C. Monaghan, A.I.C., Shape Invariant Timescale Modification of Speech using a Harmonic Model, in proceedings of ICASSP '99, Arizona.
		Monaghan, A.I.C., Shape Invariant Pitch Modification of Speech using a Harmonic Model', in proceedings of EUROSPEECH '99, Budapest.
		Quinn, G. and Smeaton, A. - "Parameters for Segmenting a Stream of Audio in Speech Documents", in Proceedings of the ESCA ETRW Workshop on Accessing Information in Spoken Audio, ISBN 0-903428-09-1, Cambridge (UK), pp96-101, 1999.
	www.compapp.dcu.ie /about/reports/98-99/publications.html (1530 words)

	"zero phase" FFT windows
		frequency resolution for low pitches when applied to my sinusoidal modelling
		It has certainly given noticeable improvements to my pitch shifting
		frequency resolution for low pitches when applied to my sinusoidal
	www.castalk.com /ntopic9975.html (2718 words)

	Auburn river national park audio theatre audaghost audio and video connector
		Auburn river national park audio theatre audaghost audio and video connector
		Auckland (Countess of Ranfurly's Own) and Northland Regiment
	www.find-ask.com /Enc/Au.shtml (19 words)

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Topic: Audio timescale pitch modification

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