| Paper: | SLP-P4.6 | ||
| Session: | Speech Enhancement in Adverse Environments | ||
| Time: | Tuesday, May 16, 14:00 - 16:00 | ||
| Presentation: | Poster | ||
| Topic: | Speech and Spoken Language Processing: Speech Enhancement (for Impaired Situations) | ||
| Title: | A Low-Complexity Noise Suppressor with Nonuniform Subbands and a Frequency-Domain Highpass Filter | ||
| Authors: | Masanori Kato, Akihiko Sugiyama, NEC Corporation, Japan | ||
| Abstract: | This paper proposes a low-complexity noise suppressor with nonuniform subbands and a frequency domain highpass filter. A highpass filter to suppress undesirable low frequency components in the input signal is replaced with a simple DC offset canceler in the time-domain and a frequency-domain weighting function. Frequency bins after Fourier transform are nonuniformly grouped to reduce the computations for calculating the spectral gain. The number of operations on typical DSP chips is 3.2 MIPS that is approximately 50\% off the conventional load. Subjective evaluation results demonstrates that the low-complexity noise suppressor achieves comparable quality of the enhanced speech to that of the conventional noise suppressor. | ||
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