Spatial audio processing apparatus

Apparatus comprising:

• an audio capture application configured to determine a reference microphone signal from a plurality of microphones, wherein the reference microphone signal is provided from a reference microphone being closer to a sound source compared to at least one other microphone during an audio capturing, wherein the audio capture application is configured to select one or more microphones from the plurality of microphones based on the determined reference microphone so as to obtain one or more microphone signals, wherein the reference microphone and the one or more microphones are adaptively selected depending on the sound source position during the audio capturing, wherein the audio capture application is configured to determine delays between the selected one or more microphone signals and the reference microphone signal so as to time align each of the selected one or more microphone signals with the reference microphone signal, wherein the audio capture application is configured to process each microphone signal by a respective gain value, wherein the respective gain value is determined for each microphone position relative to the sound source during the audio capturing, wherein the audio capture application is configured to combine time aligned and processed microphone signals;
• and
• a signal generator configured to generate a mid signal based on the combined time aligned and processed microphone signals.