Join multiple binary WAV files programmatically in ASP.Net Web API

hello all,

how to save multiple blob in .net core web api side.

here i put my audio blob output

1. 0: Blob {size: 557100, type: "audio/wav"}
2. 1: Blob {size: 581676, type: "audio/wav"}
3. 2: Blob {size: 352300, type: "audio/wav"}

i want to merge these all blobs as a single audio file in 'wav' format using .net core webapi. i also these results get controller side in .net core web api in files.