Fix per_mode_transfer_function

Due to an api change to make transfer_function sum the modes by default,
per_mode_transfer_function is broken.

p_m_t_f always needs the H matrix broken down by mode rather than
summed, to change the call to self.transfer_function to reflect this.

Signed-off-by: Mark Hymers <>
1 job for 10-fix-error-when-using-per_mode_transfer_function in 5 minutes and 29 seconds (queued for 2 seconds)
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passed #1946