Title:
第一の周波数領域から第二の周波数領域にデジタル・オーディオ信号を変換するためのオーディオ・デコーダおよび方法
Document Type and Number:
Japanese Patent JP6976277
Kind Code:
B2
Abstract:
There is provided an audio decoder and a method therein for transforming a digital audio signal from a first frequency domain to a second frequency domain. For each received frame of the digital audio signal, the method identifies an upper limit of the frequency range, and if the upper limit of the frequency range is below the Nyquist frequency of said frame of the digital audio signal by more than a threshold amount, the Nyquist frequency of said frame of the digital audio signal is lowered from its original value to a reduced value by removing spectral bands of said frame of the digital audio signal above the identified upper limit of the frequency range. Thereafter said frame of the digital audio signal is transformed from the first frequency domain to the second frequency domain via an intermediate time domain.
Inventors:
Exstrand, pail
Tesing, robin
Willemoes, Larche
Tesing, robin
Willemoes, Larche
Application Number:
JP2018567177A
Publication Date:
December 08, 2021
Filing Date:
June 20, 2017
Export Citation:
Assignee:
Dolby International Arb
International Classes:
G10L19/02
Domestic Patent References:
| JP2014013408A | ||||
| JP2016514858A | ||||
| JP2013531820A | ||||
| JP2010503881A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki
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