音声入力でプレイヤーを右に移動させたい

前提・実現したいこと

指定音量以上の音声入力があった場合、プレイヤーが右に進むようにしたいです。

発生している問題・エラーメッセージ

音声入力で右には進むのですが、止まらないです。

該当のソースコード

c#
1using System.Collections;
2using System.Collections.Generic;
3using System.Linq;
4using UnityEngine;
5using System;
6
7public class PlayerController : MonoBehaviour
8{
9    Rigidbody2D rbody2D;
10    float axisH = 0.0f;
11    private float speed;
12    public float inputSpeed;
13
14    public float jumpForce = 350f;
15
16    bool onGround = false;
17    public static string gameState = "playing";//ゲームの状態
18    public int score = 0;
19
20    Animator animator;
21    public string stopAnime = "PlayerStop";
22    public string moveAnime = "PlayerMove";
23    public string jumpAnime = "PlayerJump";
24    public string goalAnime = "PlayerGoal";
25    public string deadAnime = "PlayerDead";
26    string nowAnime = "";
27    string oldAnime = "";
28
29    /////////////////////////////////////
30    [SerializeField] private string m_DeviceName;
31    private AudioClip m_AudioClip;
32    private int m_LastAudioPos;
33    private float m_AudioLevel;
34
35    [SerializeField] private GameObject m_Cube;
36    [SerializeField, Range(10, 100)] private float m_AmpGain = 10;
37
38
39
40    void Start()
41    {
42        rbody2D = GetComponent<Rigidbody2D>();
43        animator = GetComponent<Animator>();
44        nowAnime = stopAnime;
45        oldAnime = stopAnime;
46
47        gameState = "playing";
48
49        string targetDevice = "";
50
51        foreach (var device in Microphone.devices)
52        {
53            Debug.Log($"Device Name: {device}");
54            if (device.Contains(m_DeviceName))
55            {
56                targetDevice = device;
57            }
58        }
59
60        Debug.Log($"=== Device Set: {targetDevice} ===");
61        m_AudioClip = Microphone.Start(targetDevice, true, 10, 48000);
62
63    }
64
65    void Update()
66    {
67        axisH = Input.GetAxisRaw("Horizontal");
68
69        float[] waveData = GetUpdatedAudio();
70        if (waveData.Length == 0) return;
71
72        m_AudioLevel = waveData.Average(Mathf.Abs);
73
74        if (m_AudioLevel == 0.00)
75        {
76            Debug.Log("待機");
77
78            speed = 0;
79        }
80
81        else if (m_AudioLevel > 0.05)
82        {
83            Debug.Log("右");
84            speed = inputSpeed;
85         
86        }
87
88        rbody2D.velocity = new Vector2(speed, rbody2D.velocity.y);
89
90
91        if (gameState != "playing")
92        {
93            return;
94        }
95    }
96
97
98    void FixedUpdate()
99    {
100        if (gameState != "playing")
101        {
102            return;
103        }
104
105        if (onGround)
106        {
107            if (axisH == 0)
108            {
109                nowAnime = stopAnime;
110            }
111            else
112            {
113                nowAnime = moveAnime;
114            }
115        }
116        else
117        {
118            nowAnime = jumpAnime;
119        }
120
121        if (nowAnime != oldAnime)
122        {
123            oldAnime = nowAnime;
124            animator.Play(nowAnime);
125
126        }
127
128          
129    }
130
131
132
133
134void OnTriggerEnter2D(Collider2D collision)
135    {
136        if (collision.gameObject.tag == "ScoreItem")
137        {
138            ItemData item = collision.gameObject.GetComponent<ItemData>();
139            score = item.value;
140
141            Destroy(collision.gameObject);
142        }
143
144        else if (collision.gameObject.tag == "Goal")
145        {
146            Debug.Log("Goal");
147            Goal();
148        }
149
150        else if (collision.gameObject.tag == "Dead")
151        {
152            Debug.Log("dead");
153            GameOver();
154        }
155    }
156
157    public void Goal()
158    {
159        animator.Play(goalAnime);
160
161        gameState = "gameClear";
162        GameStop();
163        Debug.Log("goalok");
164        GetComponent<CircleCollider2D>().enabled = false;
165     
166    }
167
168    public void GameOver()
169    {
170        animator.Play(deadAnime);
171
172        gameState = "gameover";
173        GameStop();
174
175        Debug.Log("deadok!");
176        GetComponent<CircleCollider2D>().enabled = false;
177        rbody2D.AddForce(new Vector2(0, 5), ForceMode2D.Impulse);
178    }
179
180
181
182    private float[] GetUpdatedAudio()
183    {
184
185        int nowAudioPos = Microphone.GetPosition(null);// nullでデフォルトデバイス
186
187        float[] waveData = Array.Empty<float>();
188
189        if (m_LastAudioPos < nowAudioPos)
190        {
191            int audioCount = nowAudioPos - m_LastAudioPos;
192            waveData = new float[audioCount];
193            m_AudioClip.GetData(waveData, m_LastAudioPos);
194        }
195        else if (m_LastAudioPos > nowAudioPos)
196        {
197            int audioBuffer = m_AudioClip.samples * m_AudioClip.channels;
198            int audioCount = audioBuffer - m_LastAudioPos;
199
200            float[] wave1 = new float[audioCount];
201            m_AudioClip.GetData(wave1, m_LastAudioPos);
202
203            float[] wave2 = new float[nowAudioPos];
204            if (nowAudioPos != 0)
205            {
206                m_AudioClip.GetData(wave2, 0);
207            }
208
209            waveData = new float[audioCount + nowAudioPos];
210            wave1.CopyTo(waveData, 0);
211            wave2.CopyTo(waveData, audioCount);
212        }
213
214        m_LastAudioPos = nowAudioPos;
215
216        return waveData;
217    }
218
219    void GameStop()
220    {
221      
222        Rigidbody2D rbody2D = GetComponent<Rigidbody2D>();
223        rbody2D.velocity = new Vector2(0, 0);
224
225    }
226}
227

試したこと

   if (m_AudioLevel == 0.00)
        {
            Debug.Log("待機");

            speed = 0;
        }

        else if (m_AudioLevel > 0.05)
        {
            Debug.Log("右");
            speed = inputSpeed;
         
        }

↑の位置を変えたり、プレイヤーに摩擦力を付けたりしましたが、止まらず進んで行ってしまいます。ご教授いただければ幸いです。