公开(公告)号：US20130182875A1

公开(公告)日：2013-07-18

申请号：US13834071

申请日：2013-03-15

Applicant: WIDEX A/S

Inventor： Jorge CEDERBERG ,  Henning Haugaard ANDERSEN ,  Mette Dahl MEINCKE ,  Andreas Brinch NIELSEN

IPC: H04R25/00

CPC classification number: H04R25/353 ,  G10L25/93

Abstract: A hearing aid comprising a frequency shifter (20) has means (22) for detecting a first frequency and a second frequency in an input signal. The frequency shifter (20) transposes a first frequency range of the input signal to a second frequency range of the input signal based on the presence of a fixed relationship between the first and the second detected frequency. The means (34, 35, 36) for detecting the fixed relationship between the first and the second frequency is used for controlling the frequency transposer (20). A speech detector (26) configured for detecting the presence of voiced and unvoiced speech is provided for suppressing the transposition of voiced-speech signals in order to preserve the speech formants. The purpose of transposing frequency bands in this way in a hearing aid is to render inaudible frequencies audible to a user of the hearing aid while maintaining the original envelope, harmonic coherence and speech intelligibility of the signal. The invention further provides a method for shifting a frequency range of an input signal in a hearing aid.

Abstract translation: 包括频移器（20）的助听器具有用于检测输入信号中的第一频率和第二频率的装置（22）。 基于第一和第二检测频率之间的固定关系的存在，移频器（20）将输入信号的第一频率范围转换到输入信号的第二频率范围。 用于检测第一和第二频率之间的固定关系的装置（34,35,36）用于控制变频器（20）。 提供了一种用于检测有声和无声语音的存在的语音检测器（26），用于抑制浊音语音信号的转置以便保留语音共振峰。 在助听器中以这种方式转置频带的目的是使助听器的用户听到无声频率，同时保持信号的原始包络，谐波相干性和语音清晰度。 本发明还提供一种用于移动助听器中的输入信号的频率范围的方法。

公开(公告)号：US20130188814A1

公开(公告)日：2013-07-25

申请号：US13845721

申请日：2013-03-18

Applicant: Widex A/S

Inventor： Henning Haugaard ANDERSEN ,  Niels Ole KNUDSEN

IPC: H04R25/00 ,  H04R25/02

CPC classification number: H04R25/00 ,  H03F1/26 ,  H03F3/2173 ,  H03F3/68 ,  H04R3/00 ,  H04R25/505 ,  H04R2225/49 ,  H04R2460/03

Abstract: A digital, three-level output driver (7) of the H-bridge variety for a hearing aid (20) obtains a reduced capacitive interference by providing a primary voltage (3) and a secondary voltage (8) for the output driver (7) and applying the secondary voltage (8) to both sides of the output driver (7) whenever the middle level of the three-level output driver (7) is present in the input signal for the output driver (7). The output driver (7) may be controlled from a pulse-width modulated signal, a sigma-delta pulse-density modulated signal, or a combination of those signals. The output driver (7) produces a clocked output signal consisting of a positive level, a negative level, and a zero level for driving an acoustic output transducer of the hearing aid (20). The invention provides a hearing aid (20) and a method of driving an output stage (7) of a hearing aid (20).

Abstract translation: 用于助听器（20）的H桥变换器的数字三电平输出驱动器（7）通过为输出驱动器（7）提供初级电压（3）和次级电压（8）来获得降低的电容干扰 ），并且只要三电平输出驱动器（7）的中间电平存在于输出驱动器（7）的输入信号中，则将次级电压（8）施加到输出驱动器（7）的两侧。 输出驱动器（7）可以由脉冲宽度调制信号，Σ-Δ脉冲密度调制信号或这些信号的组合来控制。 输出驱动器（7）产生由用于驱动助听器（20）的声输出换能器的正电平，负电平和零电平组成的定时输出信号。 本发明提供助听器（20）和驱动助听器（20）的输出级（7）的方法。