At first, with eyes closed, I didn't recognize the sound.

Steve recognized the sound of his name and felt the thought around the word "lunch."

She's singing to me, he thought with wonder, suddenly recognizing the sound as song.

Instead, he recognized the sound as being from one of the Cobras.

He recognized the sound of the footsteps in the hall outside long before the body came through his door.

I could hardly recognize the sound of my own voice.

Now I probably won't even recognize the sound of my own voice.

He did not recognize the sound of his own voice.

He recognized the sound, though it was seldom heard out here.

Apparently, he wasn't the only one who recognized the sound.