公开(公告)号：WO2022225535A1

公开(公告)日：2022-10-27

申请号：PCT/US2021/028989

申请日：2021-04-23

Applicant: EARGO, INC. ,  STEELE, Brenton ,  SORENSEN, Bryant, E.

Inventor： STEELE, Brenton ,  SORENSEN, Bryant, E.

IPC: H04R25/00 ,  H04R3/02 ,  H04R1/10 ,  G10L25/93

Abstract: Methods, devices and systems for signal processing an audio signal in a hearing device to determine whether the signal is tonal. The signal is converted at each of a series of successive time windows into samples in the frequency domain across multiple subbands. For at least one of the subbands, a normalized cross-correlation is calculated between two different samples in the same subband. A metric resulting from the calculation is compared to a predetermined threshold to provide a measure of whether the signal is tonal. The signal is considered to be tonal in the frequency of the subband when the metric is greater than or equal to the predetermined threshold, and the signal is considered to be not tonal in the frequency of the subband when the metric is less than the predetermined threshold.

公开(公告)号：WO2017192158A1

公开(公告)日：2017-11-09

申请号：PCT/US2016/038533

申请日：2016-06-21

Applicant: CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LTD. ,  SORENSEN, Bryant, E. ,  MAGRATH, Anthony, James ,  ALDERSON, Jeffrey, D.

Inventor： SORENSEN, Bryant, E. ,  MAGRATH, Anthony, James ,  ALDERSON, Jeffrey, D.

IPC: G06F12/02 ,  G06F9/355 ,  G06F9/45

CPC classification number: G06F3/0656 ,  G06F3/0611 ,  G06F3/0673 ,  G06F5/00 ,  G06F5/10 ,  G06F9/3552 ,  G06F12/0207 ,  G06F12/0223 ,  G06F2212/1016 ,  G06F2212/1028 ,  Y02D10/13

Abstract: Accessing a circular buffer in memory from a processor may be performed with the aid of precomputed values stored in a pointer descriptor field of a processor storage element, such as a register. The pointer descriptor may store a precomputed value for calculating a memory address in the circular buffer, which may include two values, in which the two values are based, at least in part, on the size of the circular buffer, but neither be the size of the circular buffer. The first value may be used to derive a starting memory location for a circular buffer. The second value may be used in combination with the first value to calculate an end memory location. The start and end locations or addresses, along with the precomputed stored values, are then used to calculate the next address based on the current address of a circular buffer in an efficient manner.

Abstract translation: 可以借助存储在处理器存储元件（例如寄存器）的指针描述符字段中的预先计算的值来执行从处理器访问存储器中的循环缓冲区。 指针描述符可以存储用于计算循环缓冲区中的存储器地址的预先计算的值，其可以包括两个值，其中这两个值至少部分地基于循环缓冲区的大小，但是既不是大小 的循环缓冲区。 第一个值可以用来导出循环缓冲区的起始内存位置。 第二个值可以与第一个值结合使用来计算结束内存位置。 然后使用开始和结束位置或地址以及预先计算的存储值，以有效的方式基于循环缓冲区的当前地址计算下一个地址。