Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Application No. | Application Title | Issue Date |
| 20120328121 | Reconstructing an Audio Signal By Spectral Component Regeneration and Noise Blending An audio signal is conveyed more efficiently by transmitting or recording a baseband of the signal with an estimated spectral envelope and a noise-blending parameter derived from a measure of the signal's noise-like quality. The signal is reconstructed by translating sp... | 12/27/2012 |
| 20120128177 | Circular Frequency Translation with Noise Blending An audio signal is conveyed more efficiently by transmitting or recording a baseband of the signal with an estimated spectral envelope and a noise-blending parameter derived from a measure of the signal's noise-like quality. The signal is reconstructed by translating sp... | 05/24/2012 |
| 20100177903 | Hybrid Derivation of Surround Sound Audio Channels By Controllably Combining Ambience and Matrix-Decoded Signal Components Ambience signal components are obtained from source audio signals, matrix-decoded signal components are obtained from the source audio signals, and the ambience signal components are controllably combined with the matrix-decoded signal components. Obtaining ambience sig... | 07/15/2010 |
| 20100094637 | ARBITRARY SHAPING OF TEMPORAL NOISE ENVELOPE WITHOUT SIDE-INFORMATION In a first aspect, arbitrary shaping of the temporal envelope of noise is provided in spectral domain coding systems without the need of side-information. In the encoding, a filtered measure of quantization error is applied as a feedback signal to the frequency-domain r... | 04/15/2010 |
| 20090304189 | Rendering Center Channel Audio An audio upmixer, such as a two-channel to three-channel upmixer, employs a difference in a measure of sound at the ears of a listener in accordance with first and second models, one based on a reproduction of the original channels and the other based on a reproduction ... | 12/10/2009 |
| 20080140405 | Audio coding system using characteristics of a decoded signal to adapt synthesized spectral components A receiver in an audio coding system receives a signal conveying frequency subband signals representing an audio signal. The subband signals are examined to assess one or more characteristics of the audio signal. Spectral components are synthesized having the assessed c... | 06/12/2008 |
| 20080133246 | Audio Coding Based on Block Grouping Blocks of audio information are arranged in groups that share encoding control parameters to reduce the amount of side information needed to convey the control parameters in an encoded signal. The configuration of groups that reduces the distortion of the encoded audio ... | 06/05/2008 |
| 20080126104 | Multichannel Decorrelation In Spatial Audio Coding Each of N audio signals are filtered with a unique decorrelating filter (38) characteristic, the characteristic being a causal linear time-invariant characteristic in the time domain or the equivalent thereof in the frequency domain, and, for each decorrelating f... | 05/29/2008 |
| 20080097750 | Channel reconfiguration with side information During production, at least one audio signal is processed in order to derive instructions for channel reconfiguring it. The at least one audio signal and the instructions are stored or transmitted. During consumption, the at least one audio signal is channel reconfigure... | 04/24/2008 |
| 20080046253 | Temporal Envelope Shaping for Spatial Audio Coding Using Frequency Domain Wiener Filtering Certain types of parametric spatial coding encoders use interchannel amplitude differences, interchannel time differences, and interchannel coherence or correlation to build a parametric model of a multichannel soundfield that is used by a decoder to construct an approx... | 02/21/2008 |
| 20080040103 | Temporal envelope shaping for spatial audio coding using frequency domain wiener filtering Certain types of parametric spatial coding encoders use interchannel amplitude differences, interchannel time differences, and interchannel coherence or correlation to build a parametric model of a multichannel soundfield that is used by a decoder to construct an approx... | 02/14/2008 |
| 20080033731 | Temporal envelope shaping for spatial audio coding using frequency domain wiener filtering Certain types of parametric spatial coding encoders use interchannel amplitude differences, interchannel time differences, and interchannel coherence or correlation to build a parametric model of a multichannel soundfield that is used by a decoder to construct an approx... | 02/07/2008 |
| 20080033732 | Channel reconfiguration with side information During production, at least one audio signal is processed in order to derive instructions for channel reconfiguring it. The at least one audio signal and the instructions are stored or transmitted. During consumption, the at least one audio signal is channel reconfigure... | 02/07/2008 |
| 20080025519 | Binaural rendering using subband filters Transfer functions like Head Related Transfer Functions (HRTF) needed for binaural rendering are implemented efficiently by a subband-domain filter structure. In one implementation, amplitude, fractional-sample delay and phase-correction filters are arranged in cascade ... | 01/31/2008 |
| 20050185850 | Adaptive hybrid transform for signal analysis and synthesis Analysis and synthesis filter banks such as those used in audio and video coding systems are each implemented by a hybrid transform that comprises a primary transform in cascade with one or more secondary transforms. The primary transforms for the filter banks implement... | 08/25/2005 |
