diff --git a/docs/img/TympanAudioInterface-Features.jpg b/docs/img/TympanAudioInterface-Features.jpg
index 6ada1f8..4a3e95c 100644
Binary files a/docs/img/TympanAudioInterface-Features.jpg and b/docs/img/TympanAudioInterface-Features.jpg differ
diff --git a/docs/img/TympanAudioInterface-Features_old.jpg b/docs/img/TympanAudioInterface-Features_old.jpg
new file mode 100644
index 0000000..6ada1f8
Binary files /dev/null and b/docs/img/TympanAudioInterface-Features_old.jpg differ