From 6818ffdc8e598b5a8aeb525c05549b9bce5b3784 Mon Sep 17 00:00:00 2001
From: "bin.xue" <bin.xue@alibaba-inc.com>
Date: Thu, 13 Oct 2022 19:42:19 +0800
Subject: [PATCH] [to #42322933] feat: optimize ANS metric value         Link:
 https://code.alibaba-inc.com/Ali-MaaS/MaaS-lib/codereview/10399100

---
 modelscope/metrics/audio_noise_metric.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/modelscope/metrics/audio_noise_metric.py b/modelscope/metrics/audio_noise_metric.py
index f26db46d..8555e95b 100644
--- a/modelscope/metrics/audio_noise_metric.py
+++ b/modelscope/metrics/audio_noise_metric.py
@@ -35,6 +35,8 @@ class AudioNoiseMetric(Metric):
         total_loss = avg_loss + avg_amp + avg_phase + avg_sisnr
         return {
             'total_loss': total_loss.item(),
-            'avg_sisnr': avg_sisnr.item(),
+            # model use opposite number of sisnr as a calculation shortcut.
+            # revert it in evaluation result
+            'avg_sisnr': -avg_sisnr.item(),
             MetricKeys.AVERAGE_LOSS: avg_loss.item()
         }