Method and apparatus for localizing multichannel sound signal

An immersive three-dimensional (3D) sound reproducing apparatus comprising:

• receiver configured to receive input channel audio signals including at least one height input channel signal and an input channel configuration;
• elevation renderer configured to obtain gains based on the input channel configuration and an output channel configuration, obtain a first head-related transfer function (HRTF) based on the input channel configuration, to provide a sense of elevation using the output channel configuration indicating a plurality of output speakers located on a horizontal plane, obtain a second HRTF used according to an input channel audio signal at a predetermined position, the input channel audio signal being output through at least two speakers at positions different from the predetermined position, based on the input channel configuration, the output channel configuration, and a frequency range of dynamic cue, obtain a HRTF filter by dividing the second HRTF by the first HRTF, and render the input channel audio signals based on the gains, and the HRTF filter, to provide the sense of elevation using the output channel configuration,
• wherein the second HRTF includes filter coefficients for a plurality of frequency bands dividing the frequency range,
• wherein each of the at least one height input channel signal is outputted to at least two of output channel audio signals via at least two output speakers located on the horizontal plan, and
• wherein the frequency range of the dynamic cue is determined according to a change of the second head related transfer function.