Method and device for improving dialogue intelligibility during playback of audio data
Described herein is a method for improving dialogue intelligibility during playback of audio data on a playback device, wherein the audio data comprise dialogue audio data, and at least one of music and effects audio data, the method including the steps of: determining a volume mixing ratio based on a volume value for playback; mixing the dialogue audio data and the at least one of music and effects audio data based on said volume mixing ratio; and outputting the mixed audio data for playback. Described are further a respective playback device and a respective computer program product.
1 . A method comprising:
determining a volume mixing ratio as a function of a sound pressure level based on a volume value for playback on a playback device by mapping the volume value for playback to the sound pressure level, wherein the volume mixing ratio refers to a ratio of the volume of the dialogue audio data over the volume of the at least one of music and effects audio data;
mixing the dialogue audio data and the at least one of music and effects audio data based on said volume mixing ratio; and
outputting the mixed audio data for playback.
2 . The method according to claim 1 , wherein mixing the dialogue audio data, and the at least one of music and effects audio data based on said volume mixing ratio includes applying a gain at least to the dialogue audio data.
3 . The method according to claim 1 , wherein the volume value for playback is based on a volume value setting of the playback device.
4 . The method according to claim 3 , wherein the volume value setting is a user-defined value.
5 . The method according to claim 1 , wherein the volume mixing ratio is further determined based on an ambient sound pressure level.
6 . The method according to claim 5 , wherein the ambient sound pressure level is determined based on a measurement by one or more microphones.
7 . The method according to claim 1 , wherein, prior to determining the volume mixing ratio, the method further includes:
receiving a bitstream including compressed audio data; and
core decoding, by a core decoder, the compressed audio data and providing the dialogue audio data, and the at least one of music and effects audio data.
8 . The method according to claim 7 , wherein the received bitstream further includes information on an audio content type, and wherein the volume mixing ratio is further determined based on said audio content type.
9 . The method according to claim 8 , wherein the audio content type includes one or more of audio content of a movie, audio content of a news program, audio content of a sports broadcast, and episodical audio content.
10 . The method according to claim 7 , wherein the method further includes analyzing the compressed audio data to provide the dialogue audio data, and the at least one of music and effects audio data.
11 . A media playback system, comprising including:
an audio processor for determining a volume mixing ratio as a function of a sound pressure level based on a volume value for playback by mapping the volume value for playback to the sound pressure level, wherein the volume mixing ratio refers to a ratio of the volume of the dialogue audio data over the volume of the at least one of music and effects audio data;
a mixer for mixing the dialogue audio data and the at least one of music and effects audio data based on said volume mixing ratio; and
a controller for outputting the mixed audio data for playback.
12 . The media playback system according to claim 11 , wherein the mixer is further configured to apply a gain at least to the dialogue audio data.
13 . The media playback system according to claim 11 , wherein the audio processor is configured to map the volume value for playback to a sound pressure level for determining the volume mixing ratio as a function of said sound pressure level.
14 . The media playback system according to claim 11 , wherein the playback device further includes a user interface for receiving a volume value setting of a user, and wherein the volume value for playback is based on said volume value setting.
15 . The media playback system according to claim 11 , wherein the playback device further includes one or more microphones for determining an ambient sound pressure level, and wherein the audio processor is configured to determine the volume mixing ratio further based on said ambient sound pressure level.
16 . The media playback system according to claim 11 , wherein the playback device further includes:
a receiver for receiving a bitstream including compressed audio data; and
a core decoder for core decoding the compressed audio data and for providing the dialogue audio data, and the at least one of music and effects audio data.
17 . The media playback system according to claim 16 , wherein the core decoder is further configured to analyze the compressed audio data to provide the dialogue audio data, and the at least one of music and effects audio data.
18 . A non-transitory, computer-readable medium storing instructions adapted to cause a device having processing capability to carry out the method according to claim 1 .