Glitch when stereo is switching from TD to FD

Basic info

• Float reference:
  • Encoder (float): b4a17ad4
  • Decoder (float): b4a17ad4
• Fixed point:
  • Encoder (fixed): ffa2d613
  • Decoder (fixed): b4a17ad4

Bug description

When the codec is going back from TD to DFT, a glitch can be heard in the fixed point version (~4.55s).

In the following figure, from top to bottom :

• floating point left channel
• floating point right channel
• fixed point left channel
• fixed point right channel
• floating point element mode
• fixed point element mode

Ways to reproduce

G6S2.c01

IVAS_cod -stereo 24400 48 G6S2.c01.wav bit
IVAS_dec STEREO 48 bit syn