F
Fengyan Qi
Researcher at Huawei
Publications - 26
Citations - 67
Fengyan Qi is an academic researcher from Huawei. The author has contributed to research in topics: Audio signal & Frequency domain. The author has an hindex of 4, co-authored 26 publications receiving 67 citations.
Papers
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Patent
Audio signal coding and decoding method and device
Fengyan Qi,Zexin Liu,Lei Miao +2 more
TL;DR: In this article, the authors proposed an audio signal encoding method that divides a frequency band into a plurality of sub-bands, and quantifies a sub-band normalization factor of each subband.
Patent
Signal Coding and Decoding Methods and Devices
Liu Zexin,Lei Miao,Fengyan Qi +2 more
TL;DR: In a signal coding method, bits for coding allocated to different bands of a frequency domain signal obtained from an input signal are adjusted to improve the coding quality as discussed by the authors, and the frequency domain signals are coded according to the adjusted bit allocation.
Patent
Method for Predicting Bandwidth Extension Frequency Band Signal, and Decoding Device
Zexin Liu,Lei Miao,Fengyan Qi +2 more
TL;DR: In this paper, a method for predicting a bandwidth extension frequency band signal is proposed, which includes demultiplexing a received bitstream to obtain a frequency domain signal, determining whether a highest frequency bin, to which a bit is allocated, is less than a preset start frequency bin of a bandwidth-extension frequency band, and predicting an excitation signal of the bandwidth-enhanced frequency band according to the determination.
Patent
Method for predicting high frequency band signal, encoding device, and decoding device
Liu Zexin,Miao Lei,Fengyan Qi +2 more
TL;DR: In this paper, the authors proposed a method for obtaining a signal type of an audio signal and a low frequency band signal of the audio signal, where the audio signals include both low frequency bands and high frequency bands.