Sound signal processing apparatus, microphone apparatus, sound signal processing method, and program

1. A sound signal processing apparatus comprising:

a sliding operation detecting section to which a sound signal collected by a microphone is inputted, and which determines start and end of a sliding operation by a determination process using a sliding sound signal component in the inputted sound signal, the sliding sound signal component being produced by the sliding operation on the microphone itself or its vicinity; and

a control section that performs a predetermined control process that is set with respect to the sliding operation, during a period from the start to the end of the sliding operation determined by the sliding operation detecting section;

wherein as the determination process, the sliding operation detecting section determines that the sliding operation has been started, when a time during which an energy level of the sliding sound signal component is equal to or higher than a first level has continued for a first time or more; and

wherein as the determination process, the sliding operation detecting section determines that the sliding operation has been ended, when a time during which the energy level of the sliding sound signal component is lower than a second level has continued for a second time or more.

2. The sound signal processing apparatus according to claim 1 , wherein the sliding operation detecting section performs the determination process by using a sliding sound signal component produced by a rotary sliding motion on the microphone itself or its vicinity with a finger or a sliding tool.

3. The sound signal processing apparatus according to claim 1 , wherein:

a plurality of channels of sound signals are inputted to the sliding operation detecting section; and

the sliding operation detecting section performs the determination process with respect to a sound signal obtained by adding the plurality of channels of sound signals to each other.

4. The sound signal processing apparatus according to claim 1 , wherein:

a plurality of channels of sound signals are inputted to the sliding operation detecting section; and

the sliding operation detecting section performs the determination process with respect to each of the plurality of channels of sound signals, and determines the start and end of the sliding operation with respect to each of the channels.

5. The sound signal processing apparatus according to claim 1 , wherein:

a plurality of channels of sound signals are inputted to the sliding operation detecting section; and

the sliding operation detecting section determines the start and the end of the sliding operation, and determines a channel on which the sliding operation has been performed, by performing a channel determination process which determines a channel that contains a sliding signal component from among the plurality of channels of sound signals, and the determination process with respect to a signal obtained by adding or subtracting sliding sound signal components from the plurality of channels to or from each other.

6. The sound signal processing apparatus according to claim 1 , wherein:

the sliding operation detecting section further detects a sliding operation direction from the inputted sound signal; and

the control section performs a predetermined control process that is set with respect to the sliding operation direction detected by the sliding operation detecting section, during the period from the start to the end of the sliding operation determined by the sliding operation detecting section.

7. The sound signal processing apparatus according to claim 1 , wherein:

the sliding operation detecting section further detects a sliding operation location from the inputted sound signal; and

the control section performs a predetermined control process that is set with respect to the sliding operation location detected by the sliding operation detecting section, during the period from the start to the end of the sliding operation determined by the sliding operation detecting section.

8. The sound signal processing apparatus according to claim 1 , further comprising:

a microphone,

wherein a sound signal collected by the microphone is inputted to the sliding operation detecting section.