TH31576B - Methods and encoders, methods and decoders, and recording medium - Google Patents

Abstract

Coding methods and devices And methods and decoding devices in which the encrypted data is reduced in volume and in which encryption and decryption operations are performed. It has less processing volume and less buffer memory capacity. This device contains a low-range decoupling circuit for separating the low-range signal components from the L and R channel signals converted by the conversion circuit to the spectral signal components. And channel synthesis cycle Signal for synthesizing the signal component of the channel (L + R) from the signal component. The L and R channel spectra still play a part in the high-range separation circuit. For separating the signal components of the high-range side. From the channel signal component (L + R), the input circuit encodes the signal component for downsizing encoding. To the signal components of Side with low range And the circuit to enter the signal components For shrinking data encryption About the coefficient of fitting into the acquired range When adjusting to the high range signal component Of the channel (L + R)

Claims (1)

1.How to encode the imported audio signal This includes the process of generating a number of lower frequency signals. And a number of higher frequency signals By separating the signal from a number of inputs Where the number of contracts Higher frequencies are less than the number of audio inputs. Each of these encoding of a lower frequency signal is greater than a number of such signals. And gave birth to substance