Audio signal processing apparatus

摘要

An audio signal processing apparatus has a plurality of channels for controlling a plurality of audio signals. In the apparatus, a volume setting unit sets volume parameters of the plurality of channels. A group generation unit determines a plurality of groups each including one or more channels among the plurality of channels. An attenuation setting unit sets an attenuation amount for each group. An on/off setting unit sets each group to either an on-state or an off-state. A plurality of volume controllers control the plurality of channels, a volume controller of each channel, which belongs to a group in the off-state, controlling a level of the channel and a volume controller of each channel, which belongs to a group in the on-state, generating a volume value by attenuating the volume parameter set to the channel by the attenuation amount set to the group and controlling a level of the channel.

主权项

1. An audio signal processing apparatus having a plurality of channels for controlling characteristics of a plurality of audio signals, the audio signal processing apparatus comprising:
a volume setting unit that sets respective volume parameters for each of the plurality of channels according to a first user operation; a group generation unit that determines a plurality of groups, each group including one or more of the plurality of channels according to a second user operation; an attenuation setting unit that sets an attenuation amount for each of the plurality of groups according to a third user operation; a mute on/off setting unit that sets each of the plurality of groups to a mute on-state or a mute off-state according to a fourth user operation, the mute on/off setting unit operable for setting more than one group of the plurality of groups to the mute on-state at the same time; and a plurality of volume controllers that are provided in correspondence to the plurality of channels, including:
a first plurality of volume controllers of a first plurality of channels belonging to a group in the mute off-state, wherein each of the first plurality of volume controllers controls a level of an audio signal of its respective channel of the first plurality of channels according to a volume parameter set to its respective channel,a second plurality of volume controllers of a second plurality of channels belonging to a group in the mute on-state, wherein each of the second plurality of volume controllers:
generates a volume value of its respective channel of the second plurality of channels by attenuating a volume parameter set to its respective channel by the attenuation amount set to the group in the mute on-state, andcontrols a level of an audio signal of its respective channel according to the generated volume value of its respective channel; andwherein the second plurality of volume controllers includes a volume controller Y of a channel Z belonging to more than one group in the mute on-state, the channel Z included among the second plurality of channels, wherein the volume controller Y:
generates a volume value of the channel Z by attenuating a volume parameter set to the channel Z by a largest of the attenuation amounts set for the more than one group in the mute-on state, andcontrols a level of an audio signal of the channel Z according to the generated volume value of the channel Z.