Abstract:
A method for providing hearing assistance to a user, comprising capturing audio signals by a microphone arrangement; measuring at least one mechanical parameter; selecting an audio signal processing scheme according to the measured at least one mechanical parameter; processing, by a signal processing unit, the captured audio signals according to the selected audio signal processing scheme; transmitting the processed audio signals to stimulating means worn at or in at least one of the user's ears via a wireless audio link; and stimulating the user's hearing by said stimulating means according to the processed audio signals.
Abstract:
There is provided a method for providing hearing assistance to a user (101, 301), comprising: capturing audio signals by a microphone arrangement (26) comprising at least two spaced apart microphones (M1, M2); estimating the total energy contained in the voice spectrum of the audio signals captured at least one of the microphones; estimating the value of the direction of arrival of the captured audio signals by comparing the audio signals captured by at least two of the spaced apart microphones; judging whether a voice is present close to microphone arrangement by taking into account the estimated total energy contained in the voice spectrum of the captured audio signals and the estimated value of the direction of arrival of the captured audio signals; outputting a signal representative of said judgement; processing said captured audio signals according to said signal representative of said judgement; and stimulating the user's hearing, by stimulating means worn at or in at least one of the user's ears (39), according to the processed audio signals.
Abstract:
There is provided a method for providing hearing assistance to a user (101, 301), comprising: capturing audio signals by a microphone arrangement (26) comprising at least two spaced apart microphones (M1, M2); estimating the total energy contained in the voice spectrum of the audio signals captured at least one of the microphones; estimating the value of the direction of arrival of the captured audio signals by comparing the audio signals captured by at least two of the spaced apart microphones; judging whether a voice is present close to microphone arrangement by taking into account the estimated total energy contained in the voice spectrum of the captured audio signals and the estimated value of the direction of arrival of the captured audio signals; outputting a signal representative of said judgement; processing said captured audio signals according to said signal representative of said judgement; and stimulating the user's hearing, by stimulating means worn at or in at least one of the user's ears (39), according to the processed audio signals.
Abstract:
A method for providing hearing assistance to a user, comprising capturing audio signals by a microphone arrangement; measuring at least one mechanical parameter; selecting an audio signal processing scheme according to the measured at least one mechanical parameter; processing, by a signal processing unit, the captured audio signals according to the selected audio signal processing scheme; transmitting the processed audio signals to stimulating means worn at or in at least one of the user's ears via a wireless audio link; and stimulating the user's hearing by said stimulating means according to the processed audio signals.
Abstract:
A method for providing hearing assistance to a user, comprising capturing audio signals by an internal microphone arrangement and supplying the captured audio signals a central signal processing unit; estimating whether a certain type of external audio signal supply device is connected to the audio signal processing unit in order to supply external audio signals to the central signal processing unit, and selecting an audio signal processing scheme according to the estimated type of external audio signal supply device; processing, the captured audio signals and the external audio signals according to the selected audio signal processing scheme; transmitting the processed audio signals to stimulating means worn at or in at least one of the user's ears via a wireless audio link; and stimulating the user's hearing by said stimulating means according to the processed audio signals.
Abstract:
The speech is sampled in such a way as to obtain successive voice frames each including a predetermined number of samples, and with each voice frame are determined parameters of a code-excited linear prediction model. The parameters include a long-term excitation digital word vi extracted from an adaptive coded directory LTD, and an associated long-term gain Ga, as well as a short-term excitation word cj extracted from a fixed coded directory STD and an associated short-term gain Gc. The product of the long-term excitation extracted word times the associated long-term gain is summed SM with the product of the short-term excitation extracted word times the associated short-term gain. The summed digital word is filtered in a low-pass filter FLCT having a cutoff frequency greater than a quarter of the sampling frequency and less than a half of the latter, and the adaptive coded directory is updated with the filtered word.
Abstract translation:对语音进行采样,以获得每个包括预定数量的采样的连续语音帧,并且每个语音帧是确定码激励线性预测模型的参数。 这些参数包括从自适应编码目录LTD提取的长期激励数字字v i i和相关联的长期增益Ga,以及从固定的解码器提取的短期激励词cj 编码目录STD和相关联的短期增益Gc。 长期激励提取词乘以相关长期增益的乘积与短期激励提取词乘积相关的短期增益的乘积SM相加。 相加的数字字在具有大于采样频率的四分之一的截止频率并且小于后者的一半的低通滤波器FLCT中被滤波,并且用滤波的字更新自适应编码目录。