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Ramo; Anssi
Tampere, FI
No. of patents:

Patent Number Title Of Patent Date Issued
8060363 Audio signal encoding November 15, 2011
For an audio coding, noise suppression is applied to an original audio signal to obtain an audio signal with reduced noise. A coding mode is selected based on the audio signal with reduced noise. The original audio signal is then encoded using this selected coding mode.
7813922 Audio quantization October 12, 2010
For supporting a selection of a predictive or non-predictive quantization in the scope of an audio signal coding, it is determined whether an error resulting with a non-predictive quantization of an audio signal segment lies below a predetermined threshold value. An audio signal segment
7752038 Pitch lag estimation July 6, 2010
Autocorrelation values are determined as a basis for an estimation of a pitch lag in a segment of an audio signal. A first considered delay range for the autocorrelation computations is divided into a first set of sections, and first autocorrelation values are determined for delays in a
7587314 Single-codebook vector quantization for multiple-rate applications September 8, 2009
This invention relates to a method, a device and a software application product for N-level quantization of vectors, wherein N is selectable prior to said quantization from a set of at least two pre-defined values that are smaller than or equal to a pre-defined maximum number of levels
7523032 Speech coding method, device, coding module, system and software program product for pre-process April 21, 2009
The invention relates to a method for use in parametric speech coding. In order to enable an improved parametric coding of speech signals, the method comprises a first step of pre-processing a to be encoded speech based signal such that a phase structure of the to be encoded speech b
7003454 Method and system for line spectral frequency vector quantization in speech codec February 21, 2006
A method and system for quantizing LSF vectors in a speech coder, wherein predicted LSF values based on previously decoded output values are used to estimate spectral distortion, along with the residual codebook vectors and the LSF coefficients. The method comprises the steps of obtainin

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