Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Low-frequency-band component and high-frequency-band audio encoding/decoding apparatus, and communication apparatus thereof










Image Number 5 for United States Patent #7848921.

An audio encoding apparatus capable of improving a frame cancellation error tolerance without increasing a number of bits of a fixed codebook in a CELP type audio encoding. A linear prediction analyzer analyzes an input digital speech signal and outputs linear predictive coefficients. A linear predictive coefficients quantizer quantizes the linear predictive coefficients. A low-frequency-band component encoder encodes a down-sampled linear-predictive residual signal by a pulse-code-modulation encoder and generates low-frequency-band component encoded information, while a high-frequency-band component encoder encodes an error signal between a linear-predictive residual signal and an up-sampled signal of a decoded down-sampled linear-predictive residual signal by a code-excited-linear-prediction encoder and generates high-frequency-band component encoded information.








 
 
  Recently Added Patents
Method and system for filtering noises in an image scanned by charged particles
Digital camera supporting intelligent self-timer mode and method of controlling the same
Carrying case
Electrode structure and its manufacturing method, and semiconductor module
System and method for providing advertising content using a group training system
Method for transitioning between Ziegler-Natta and metallocene catalysts in a bulk loop reactor for the production of polypropylene
Combining seismic data from sensors to attenuate noise
  Randomly Featured Patents
Bi-tech piston
Method and system for performing statistical leakage characterization, analysis, and modeling
Processing unit having decimal floating-point divider using Newton-Raphson iteration
Formation of nitrogen containing dielectric layers having an improved nitrogen distribution
Reduced filler particle size encapsulant for reduction in die surface damage in LOC packages and method of use
Positioning aid and method for assisting in aligning heavy machines
Housing of a bearing with a pressure-compensating arrangement
Twisting actuator accelerometer
Nestable box spring foundation
Combined disc and tape drive