Extra buffer metadata describing audio downmixing matrix. This metadata is
attached to audio buffers and contains a matrix to downmix the buffer number
of channels to @channels.
@matrix is an two-dimensional array of @to_channels times @from_channels
coefficients, i.e. the i-th output channels is constructed by multiplicating
the input channels with the coefficients in @matrixi and taking the sum
of the results.
Extra buffer metadata describing audio downmixing matrix. This metadata is attached to audio buffers and contains a matrix to downmix the buffer number of channels to @channels.
@matrix is an two-dimensional array of @to_channels times @from_channels coefficients, i.e. the i-th output channels is constructed by multiplicating the input channels with the coefficients in @matrixi and taking the sum of the results.